diff --git a/db/migrations/20210324064239.php b/db/migrations/20210324064239.php
index b5eaafd4..3c170df3 100644
--- a/db/migrations/20210324064239.php
+++ b/db/migrations/20210324064239.php
@@ -3268,619 +3268,6 @@ final class V20210324064239 extends AbstractMigration
                 'after' => 'create_time',
             ])
             ->create();
-        $this->table('kg_im_friend_group', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'identity' => 'enable',
-                'comment' => '主键编号',
-            ])
-            ->addColumn('user_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '用户编号',
-                'after' => 'id',
-            ])
-            ->addColumn('name', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 100,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '名称',
-                'after' => 'user_id',
-            ])
-            ->addColumn('priority', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '优先级',
-                'after' => 'name',
-            ])
-            ->addColumn('deleted', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '删除标识',
-                'after' => 'priority',
-            ])
-            ->addColumn('user_count', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '成员数',
-                'after' => 'deleted',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'user_count',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->addIndex(['user_id'], [
-                'name' => 'user_id',
-                'unique' => true,
-            ])
-            ->create();
-        $this->table('kg_im_friend_user', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'identity' => 'enable',
-                'comment' => '主键编号',
-            ])
-            ->addColumn('user_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '用户编号',
-                'after' => 'id',
-            ])
-            ->addColumn('friend_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '目标编号',
-                'after' => 'user_id',
-            ])
-            ->addColumn('group_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '分组编号',
-                'after' => 'friend_id',
-            ])
-            ->addColumn('msg_count', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '消息数',
-                'after' => 'group_id',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'msg_count',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->addIndex(['user_id', 'friend_id'], [
-                'name' => 'user_friend',
-                'unique' => false,
-            ])
-            ->create();
-        $this->table('kg_im_group', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'identity' => 'enable',
-                'comment' => '主键编号',
-            ])
-            ->addColumn('owner_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '群主编号',
-                'after' => 'id',
-            ])
-            ->addColumn('course_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '课程编号',
-                'after' => 'owner_id',
-            ])
-            ->addColumn('type', 'integer', [
-                'null' => false,
-                'default' => '1',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'comment' => '类型',
-                'after' => 'course_id',
-            ])
-            ->addColumn('name', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 100,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '名称',
-                'after' => 'type',
-            ])
-            ->addColumn('avatar', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 100,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '头像',
-                'after' => 'name',
-            ])
-            ->addColumn('about', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 255,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '简介',
-                'after' => 'avatar',
-            ])
-            ->addColumn('published', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '发布标识',
-                'after' => 'about',
-            ])
-            ->addColumn('deleted', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '删除标识',
-                'after' => 'published',
-            ])
-            ->addColumn('user_count', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '成员数',
-                'after' => 'deleted',
-            ])
-            ->addColumn('msg_count', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '消息数',
-                'after' => 'user_count',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'msg_count',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->create();
-        $this->table('kg_im_group_user', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'identity' => 'enable',
-                'comment' => '主键编号',
-            ])
-            ->addColumn('group_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '群组编号',
-                'after' => 'id',
-            ])
-            ->addColumn('user_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '用户编号',
-                'after' => 'group_id',
-            ])
-            ->addColumn('priority', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '优先级',
-                'after' => 'user_id',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'priority',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->addIndex(['group_id'], [
-                'name' => 'group_id',
-                'unique' => false,
-            ])
-            ->addIndex(['group_id', 'user_id'], [
-                'name' => 'group_user',
-                'unique' => false,
-            ])
-            ->addIndex(['user_id'], [
-                'name' => 'user_id',
-                'unique' => false,
-            ])
-            ->create();
-        $this->table('kg_im_message', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'identity' => 'enable',
-                'comment' => '主键编号',
-            ])
-            ->addColumn('chat_id', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 30,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '对话编号',
-                'after' => 'id',
-            ])
-            ->addColumn('sender_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '发送方',
-                'after' => 'chat_id',
-            ])
-            ->addColumn('receiver_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '接收方',
-                'after' => 'sender_id',
-            ])
-            ->addColumn('receiver_type', 'integer', [
-                'null' => false,
-                'default' => '1',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'comment' => '接收方类型',
-                'after' => 'receiver_id',
-            ])
-            ->addColumn('content', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 3000,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '内容',
-                'after' => 'receiver_type',
-            ])
-            ->addColumn('viewed', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '已读标识',
-                'after' => 'content',
-            ])
-            ->addColumn('deleted', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '删除标识',
-                'after' => 'viewed',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'deleted',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->addIndex(['chat_id'], [
-                'name' => 'chat_id',
-                'unique' => false,
-            ])
-            ->addIndex(['receiver_id', 'receiver_type'], [
-                'name' => 'receiver',
-                'unique' => false,
-            ])
-            ->create();
-        $this->table('kg_im_notice', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'identity' => 'enable',
-                'comment' => '主键编号',
-            ])
-            ->addColumn('sender_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '发送方',
-                'after' => 'id',
-            ])
-            ->addColumn('receiver_id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '接收方',
-                'after' => 'sender_id',
-            ])
-            ->addColumn('item_type', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '条目类型',
-                'after' => 'receiver_id',
-            ])
-            ->addColumn('item_info', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 1500,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '条目内容',
-                'after' => 'item_type',
-            ])
-            ->addColumn('viewed', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '已读标识',
-                'after' => 'item_info',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'viewed',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->addIndex(['receiver_id'], [
-                'name' => 'receiver_id',
-                'unique' => false,
-            ])
-            ->addIndex(['sender_id'], [
-                'name' => 'sender_id',
-                'unique' => false,
-            ])
-            ->create();
-        $this->table('kg_im_user', [
-            'id' => false,
-            'primary_key' => ['id'],
-            'engine' => 'InnoDB',
-            'encoding' => 'utf8mb4',
-            'collation' => 'utf8mb4_general_ci',
-            'comment' => '',
-            'row_format' => 'DYNAMIC',
-        ])
-            ->addColumn('id', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '主键编号',
-            ])
-            ->addColumn('name', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 30,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '名称',
-                'after' => 'id',
-            ])
-            ->addColumn('avatar', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 100,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '头像',
-                'after' => 'name',
-            ])
-            ->addColumn('sign', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 30,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '签名',
-                'after' => 'avatar',
-            ])
-            ->addColumn('skin', 'string', [
-                'null' => false,
-                'default' => '',
-                'limit' => 100,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '皮肤',
-                'after' => 'sign',
-            ])
-            ->addColumn('status', 'string', [
-                'null' => false,
-                'default' => 'hide',
-                'limit' => 15,
-                'collation' => 'utf8mb4_general_ci',
-                'encoding' => 'utf8mb4',
-                'comment' => '在线状态',
-                'after' => 'skin',
-            ])
-            ->addColumn('deleted', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '删除标识',
-                'after' => 'status',
-            ])
-            ->addColumn('friend_count', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '好友数',
-                'after' => 'deleted',
-            ])
-            ->addColumn('group_count', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '群组数',
-                'after' => 'friend_count',
-            ])
-            ->addColumn('create_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '创建时间',
-                'after' => 'group_count',
-            ])
-            ->addColumn('update_time', 'integer', [
-                'null' => false,
-                'default' => '0',
-                'limit' => MysqlAdapter::INT_REGULAR,
-                'signed' => false,
-                'comment' => '更新时间',
-                'after' => 'create_time',
-            ])
-            ->create();
         $this->table('kg_learning', [
             'id' => false,
             'primary_key' => ['id'],
diff --git a/db/migrations/20210403184518.php b/db/migrations/20210403184518.php
index 85189d44..5c3aa05a 100644
--- a/db/migrations/20210403184518.php
+++ b/db/migrations/20210403184518.php
@@ -46,15 +46,6 @@ final class V20210403184518 extends AbstractMigration
         ];
 
         $this->table('kg_user')->insert($user)->saveData();
-
-        $imUser = [
-            'id' => $user['id'],
-            'name' => $user['name'],
-            'avatar' => $user['avatar'],
-            'create_time' => $now,
-        ];
-
-        $this->table('kg_im_user')->insert($imUser)->saveData();
     }
 
     protected function initRoleData()
@@ -949,7 +940,6 @@ final class V20210403184518 extends AbstractMigration
                     'course_review' => ['enabled' => 1, 'point' => 50],
                     'chapter_study' => ['enabled' => 1, 'point' => 10],
                     'site_visit' => ['enabled' => 1, 'point' => 10],
-                    'im_discuss' => ['enabled' => 1, 'point' => 10],
                     'article_post' => ['enabled' => 1, 'point' => 20, 'limit' => 50],
                     'question_post' => ['enabled' => 1, 'point' => 5, 'limit' => 50],
                     'answer_post' => ['enabled' => 1, 'point' => 5, 'limit' => 50],
diff --git a/db/migrations/20210720153027.php b/db/migrations/20210720153027.php
index 21e1f9d8..0a980597 100644
--- a/db/migrations/20210720153027.php
+++ b/db/migrations/20210720153027.php
@@ -27,7 +27,13 @@ final class V20210720153027 extends AbstractMigration
 
     protected function createCourseTagTable()
     {
-        $this->table('kg_course_tag', [
+        $tableName = 'kg_course_tag';
+
+        if ($this->table($tableName)->exists()) {
+            return;
+        }
+
+        $this->table($tableName, [
             'id' => false,
             'primary_key' => ['id'],
             'engine' => 'InnoDB',
@@ -80,8 +86,10 @@ final class V20210720153027 extends AbstractMigration
 
     protected function alterCourseTable()
     {
-        $this->table('kg_course')
-            ->addColumn('tags', 'string', [
+        $table = $this->table('kg_course');
+
+        if ($table->hasColumn('tags') == false) {
+            $table->addColumn('tags', 'string', [
                 'null' => false,
                 'default' => '',
                 'limit' => 255,
@@ -89,13 +97,18 @@ final class V20210720153027 extends AbstractMigration
                 'encoding' => 'utf8mb4',
                 'comment' => '标签',
                 'after' => 'summary',
-            ])->save();
+            ]);
+        }
+
+        $table->save();
     }
 
     protected function alterCategoryTable()
     {
-        $this->table('kg_category')
-            ->addColumn('alias', 'string', [
+        $table = $this->table('kg_category');
+
+        if ($table->hasColumn('alias') == false) {
+            $table->addColumn('alias', 'string', [
                 'null' => false,
                 'default' => '',
                 'limit' => 30,
@@ -103,7 +116,11 @@ final class V20210720153027 extends AbstractMigration
                 'encoding' => 'utf8mb4',
                 'comment' => '别名',
                 'after' => 'name',
-            ])->addColumn('icon', 'string', [
+            ]);
+        }
+
+        if ($table->hasColumn('icon') == false) {
+            $table->addColumn('icon', 'string', [
                 'null' => false,
                 'default' => '',
                 'limit' => 100,
@@ -111,13 +128,19 @@ final class V20210720153027 extends AbstractMigration
                 'encoding' => 'utf8mb4',
                 'comment' => '图标',
                 'after' => 'name',
-            ])->save();
+            ]);
+        }
+
+        $table->save();
     }
 
     protected function alterTagTable()
     {
-        $this->table('kg_tag')
-            ->addColumn('scopes', 'string', [
+        $table = $this->table('kg_tag');
+
+        if ($table->hasColumn('scopes') == false) {
+
+            $table->addColumn('scopes', 'string', [
                 'null' => false,
                 'default' => '',
                 'limit' => 100,
@@ -125,32 +148,43 @@ final class V20210720153027 extends AbstractMigration
                 'encoding' => 'utf8mb4',
                 'comment' => '范围',
                 'after' => 'icon',
-            ])
-            ->addColumn('course_count', 'integer', [
+            ]);
+        }
+
+        if ($table->hasColumn('course_count') == false) {
+            $table->addColumn('course_count', 'integer', [
                 'null' => false,
                 'default' => '0',
                 'limit' => MysqlAdapter::INT_REGULAR,
                 'signed' => false,
                 'comment' => '课程数',
                 'after' => 'follow_count',
-            ])
-            ->addColumn('article_count', 'integer', [
+            ]);
+        }
+
+        if ($table->hasColumn('article_count') == false) {
+            $table->addColumn('article_count', 'integer', [
                 'null' => false,
                 'default' => '0',
                 'limit' => MysqlAdapter::INT_REGULAR,
                 'signed' => false,
                 'comment' => '文章数',
                 'after' => 'course_count',
-            ])
-            ->addColumn('question_count', 'integer', [
+            ]);
+        }
+
+        if ($table->hasColumn('question_count') == false) {
+            $table->addColumn('question_count', 'integer', [
                 'null' => false,
                 'default' => '0',
                 'limit' => MysqlAdapter::INT_REGULAR,
                 'signed' => false,
                 'comment' => '问题数',
                 'after' => 'article_count',
-            ])
-            ->save();
+            ]);
+        }
+
+        $table->save();
     }
 
     protected function handleCourseTags()
diff --git a/db/migrations/20210802021814.php b/db/migrations/20210802021814.php
index 51852a92..59f542dd 100644
--- a/db/migrations/20210802021814.php
+++ b/db/migrations/20210802021814.php
@@ -17,8 +17,10 @@ final class V20210802021814 extends AbstractMigration
 
     protected function alterPageTable()
     {
-        $this->table('kg_page')
-            ->addColumn('alias', 'string', [
+        $table = $this->table('kg_page');
+
+        if ($table->hasColumn('alias') == false) {
+            $table->addColumn('alias', 'string', [
                 'null' => false,
                 'default' => '',
                 'limit' => 50,
@@ -26,7 +28,10 @@ final class V20210802021814 extends AbstractMigration
                 'encoding' => 'utf8mb4',
                 'comment' => '别名',
                 'after' => 'title',
-            ])->save();
+            ]);
+        }
+
+        $table->save();
     }
 
 }
diff --git a/db/migrations/20210809153030.php b/db/migrations/20210809153030.php
index a8d7ee89..bd94311b 100644
--- a/db/migrations/20210809153030.php
+++ b/db/migrations/20210809153030.php
@@ -5,19 +5,22 @@
  * @link https://www.koogua.com
  */
 
+require_once 'SettingTrait.php';
+
 use Phinx\Migration\AbstractMigration;
 
 final class V20210809153030 extends AbstractMigration
 {
 
+    use SettingTrait;
+
     public function up()
     {
-        $this->handleVodSetting();
-        $this->handleImSetting();
+        $this->handleVodSettings();
         $this->handleRemotePlayUrl();
     }
 
-    protected function handleVodSetting()
+    protected function handleVodSettings()
     {
         $rows = [
             [
@@ -32,18 +35,7 @@ final class V20210809153030 extends AbstractMigration
             ],
         ];
 
-        $this->table('kg_setting')->insert($rows)->save();
-    }
-
-    protected function handleImSetting()
-    {
-        $row = [
-            'section' => 'im.main',
-            'item_key' => 'enabled',
-            'item_value' => '1',
-        ];
-
-        $this->table('kg_setting')->insert($row)->saveData();
+        $this->insertSettings($rows);
     }
 
     protected function handleRemotePlayUrl()
diff --git a/db/migrations/20210820064755.php b/db/migrations/20210820064755.php
index 657de33f..8c19c82b 100644
--- a/db/migrations/20210820064755.php
+++ b/db/migrations/20210820064755.php
@@ -5,17 +5,21 @@
  * @link https://www.koogua.com
  */
 
+require_once 'SettingTrait.php';
+
 use Phinx\Migration\AbstractMigration;
 
 final class V20210820064755 extends AbstractMigration
 {
 
+    use SettingTrait;
+
     public function up()
     {
-        $this->handleContactSetting();
+        $this->handleContactSettings();
     }
 
-    protected function handleContactSetting()
+    protected function handleContactSettings()
     {
         $rows = [
             [
@@ -65,7 +69,7 @@ final class V20210820064755 extends AbstractMigration
             ],
         ];
 
-        $this->table('kg_setting')->insert($rows)->save();
+        $this->insertSettings($rows);
     }
 
 }
diff --git a/db/migrations/20210825111618.php b/db/migrations/20210825111618.php
index 5b337651..d3553457 100644
--- a/db/migrations/20210825111618.php
+++ b/db/migrations/20210825111618.php
@@ -19,9 +19,11 @@ final class V20210825111618 extends AbstractMigration
     {
         $table = $this->table('kg_upload');
 
-        $table->removeIndexByName('md5')->save();
+        if ($table->hasIndexByName('md5')) {
+            $table->removeIndexByName('md5')->save();
+            $table->addIndex('md5')->save();
+        }
 
-        $table->addIndex('md5')->save();
     }
 
 }
diff --git a/db/migrations/20210903040558.php b/db/migrations/20210903040558.php
index d998c32b..57f655b1 100644
--- a/db/migrations/20210903040558.php
+++ b/db/migrations/20210903040558.php
@@ -5,17 +5,21 @@
  * @link https://www.koogua.com
  */
 
+require_once 'SettingTrait.php';
+
 use Phinx\Migration\AbstractMigration;
 
 final class V20210903040558 extends AbstractMigration
 {
 
+    use SettingTrait;
+
     public function up()
     {
-        $this->handleVodSetting();
+        $this->handleVodSettings();
     }
 
-    protected function handleVodSetting()
+    protected function handleVodSettings()
     {
         $row = $this->getQueryBuilder()
             ->select('*')
diff --git a/db/migrations/20210916072842.php b/db/migrations/20210916072842.php
index e8b001eb..8aa7b850 100644
--- a/db/migrations/20210916072842.php
+++ b/db/migrations/20210916072842.php
@@ -7,15 +7,19 @@
 
 use Phinx\Migration\AbstractMigration;
 
+require_once 'SettingTrait.php';
+
 final class V20210916072842 extends AbstractMigration
 {
 
+    use SettingTrait;
+
     public function up()
     {
-        $this->handleLocalAuthSetting();
+        $this->handleLocalAuthSettings();
     }
 
-    protected function handleLocalAuthSetting()
+    protected function handleLocalAuthSettings()
     {
         $rows = [
             [
@@ -30,7 +34,7 @@ final class V20210916072842 extends AbstractMigration
             ]
         ];
 
-        $this->table('kg_setting')->insert($rows)->save();
+        $this->insertSettings($rows);
     }
 
 }
diff --git a/db/migrations/20210917093354.php b/db/migrations/20210917093354.php
index 08a64015..0b68b55b 100644
--- a/db/migrations/20210917093354.php
+++ b/db/migrations/20210917093354.php
@@ -5,16 +5,20 @@
  * @link https://www.koogua.com
  */
 
+require_once 'SettingTrait.php';
+
 use Phinx\Db\Adapter\MysqlAdapter;
 
 class V20210917093354 extends Phinx\Migration\AbstractMigration
 {
 
+    use SettingTrait;
+
     public function up()
     {
         $this->alterConnectTable();
         $this->alterWechatSubscribeTable();
-        $this->handleLocalAuthSetting();
+        $this->handleLocalAuthSettings();
     }
 
     protected function alterConnectTable()
@@ -92,7 +96,7 @@ class V20210917093354 extends Phinx\Migration\AbstractMigration
         $table->save();
     }
 
-    protected function handleLocalAuthSetting()
+    protected function handleLocalAuthSettings()
     {
         $rows = [
             [
@@ -107,7 +111,7 @@ class V20210917093354 extends Phinx\Migration\AbstractMigration
             ]
         ];
 
-        $this->table('kg_setting')->insert($rows)->save();
+        $this->insertSettings($rows);
     }
 
 }
diff --git a/db/migrations/20211017085325.php b/db/migrations/20211017085325.php
index 6d01c66a..f9f52167 100644
--- a/db/migrations/20211017085325.php
+++ b/db/migrations/20211017085325.php
@@ -18,15 +18,20 @@ final class V20211017085325 extends AbstractMigration
 
     protected function alterCourseTable()
     {
-        $this->table('kg_course')
-            ->addColumn('fake_user_count', 'integer', [
+        $table = $this->table('kg_course');
+
+        if ($table->hasColumn('fake_user_count') == false) {
+            $table->addColumn('fake_user_count', 'integer', [
                 'null' => false,
                 'default' => '0',
                 'limit' => MysqlAdapter::INT_REGULAR,
                 'signed' => false,
                 'comment' => '伪造用户数',
                 'after' => 'user_count',
-            ])->save();
+            ]);
+        }
+
+        $table->save();
     }
 
 }
diff --git a/db/migrations/20211019093522.php b/db/migrations/20211019093522.php
index 5946d094..9c9c2d0e 100644
--- a/db/migrations/20211019093522.php
+++ b/db/migrations/20211019093522.php
@@ -19,28 +19,38 @@ final class V20211019093522 extends AbstractMigration
 
     protected function alterUserSessionTable()
     {
-        $this->table('kg_user_session')
-            ->addColumn('deleted', 'integer', [
+        $table = $this->table('kg_user_session');
+
+        if ($table->hasColumn('deleted') == false) {
+            $table->addColumn('deleted', 'integer', [
                 'null' => false,
                 'default' => '0',
                 'limit' => MysqlAdapter::INT_REGULAR,
                 'signed' => false,
                 'comment' => '删除标识',
                 'after' => 'client_ip',
-            ])->save();
+            ]);
+        }
+
+        $table->save();
     }
 
     protected function alterUserTokenTable()
     {
-        $this->table('kg_user_token')
-            ->addColumn('deleted', 'integer', [
+        $table = $this->table('kg_user_token');
+
+        if ($table->hasColumn('deleted') == false) {
+            $table->addColumn('deleted', 'integer', [
                 'null' => false,
                 'default' => '0',
                 'limit' => MysqlAdapter::INT_REGULAR,
                 'signed' => false,
                 'comment' => '删除标识',
                 'after' => 'client_ip',
-            ])->save();
+            ]);
+        }
+
+        $table->save();
     }
 
 }
diff --git a/db/migrations/20211231013226.php b/db/migrations/20211231013226.php
index a3f35979..69337b25 100644
--- a/db/migrations/20211231013226.php
+++ b/db/migrations/20211231013226.php
@@ -2,26 +2,29 @@
 
 use Phinx\Migration\AbstractMigration;
 
+require_once 'SettingTrait.php';
+
 final class V20211231013226 extends AbstractMigration
 {
 
+    use SettingTrait;
+
     public function up()
     {
-        $this->handleSmsSetting();
+        $this->handleSmsSettings();
     }
 
-    protected function handleSmsSetting()
+    protected function handleSmsSettings()
     {
-        $row =
+        $rows = [
             [
-                [
-                    'section' => 'sms',
-                    'item_key' => 'region',
-                    'item_value' => 'ap-guangzhou',
-                ]
-            ];
+                'section' => 'sms',
+                'item_key' => 'region',
+                'item_value' => 'ap-guangzhou',
+            ]
+        ];
 
-        $this->table('kg_setting')->insert($row)->save();
+        $this->insertSettings($rows);
     }
 
 }
diff --git a/db/migrations/20220607014823.php b/db/migrations/20220607014823.php
index 5c8a5778..95b40e8d 100644
--- a/db/migrations/20220607014823.php
+++ b/db/migrations/20220607014823.php
@@ -21,29 +21,28 @@ final class V20220607014823 extends AbstractMigration
 
     protected function handleSiteSettings()
     {
-        $rows =
+        $rows = [
             [
-                [
-                    'section' => 'site',
-                    'item_key' => 'isp_sn',
-                    'item_value' => '',
-                ],
-                [
-                    'section' => 'site',
-                    'item_key' => 'isp_link',
-                    'item_value' => 'https://dxzhgl.miit.gov.cn',
-                ],
-                [
-                    'section' => 'site',
-                    'item_key' => 'company_sn',
-                    'item_value' => '',
-                ],
-                [
-                    'section' => 'site',
-                    'item_key' => 'company_sn_link',
-                    'item_value' => '',
-                ],
-            ];
+                'section' => 'site',
+                'item_key' => 'isp_sn',
+                'item_value' => '',
+            ],
+            [
+                'section' => 'site',
+                'item_key' => 'isp_link',
+                'item_value' => 'https://dxzhgl.miit.gov.cn',
+            ],
+            [
+                'section' => 'site',
+                'item_key' => 'company_sn',
+                'item_value' => '',
+            ],
+            [
+                'section' => 'site',
+                'item_key' => 'company_sn_link',
+                'item_value' => '',
+            ],
+        ];
 
         $this->insertSettings($rows);
     }
diff --git a/db/migrations/20220801025747.php b/db/migrations/20220801025747.php
index 21a3e9ea..6ceec26c 100644
--- a/db/migrations/20220801025747.php
+++ b/db/migrations/20220801025747.php
@@ -20,7 +20,13 @@ class V20220801025747 extends Phinx\Migration\AbstractMigration
 
     protected function createMigrationTaskTable()
     {
-        $this->table('kg_migration_task', [
+        $tableName = 'kg_migration_task';
+
+        if ($this->table($tableName)->exists()) {
+            return;
+        }
+
+        $this->table($tableName, [
             'id' => false,
             'primary_key' => ['id'],
             'engine' => 'InnoDB',
@@ -70,13 +76,21 @@ class V20220801025747 extends Phinx\Migration\AbstractMigration
 
     protected function dropImTables()
     {
-        $this->table('kg_im_friend_group')->drop()->save();
-        $this->table('kg_im_friend_user')->drop()->save();
-        $this->table('kg_im_group')->drop()->save();
-        $this->table('kg_im_group_user')->drop()->save();
-        $this->table('kg_im_message')->drop()->save();
-        $this->table('kg_im_notice')->drop()->save();
-        $this->table('kg_im_user')->drop()->save();
+        $tableNames = [
+            'kg_im_friend_group',
+            'kg_im_friend_user',
+            'kg_im_group',
+            'kg_im_group_user',
+            'kg_im_message',
+            'kg_im_notice',
+            'kg_im_user',
+        ];
+
+        foreach ($tableNames as $tableName) {
+            if ($this->table($tableName)->exists()) {
+                $this->table($tableName)->drop()->save();
+            }
+        }
     }
 
     protected function deleteImGroupNav()