diff --git a/app/Models/Project.php b/app/Models/Project.php
index 876424e2..6f8ab786 100644
--- a/app/Models/Project.php
+++ b/app/Models/Project.php
@@ -318,6 +318,10 @@ class Project extends AbstractModel
     public function deleteProject()
     {
         AbstractModel::transaction(function () {
+            $dialog = WebSocketDialog::find($this->dialog_id);
+            if ($dialog) {
+                $dialog->deleteDialog();
+            }
             $columns = ProjectColumn::whereProjectId($this->id)->get();
             foreach ($columns as $column) {
                 $column->deleteColumn(false);
diff --git a/app/Models/ProjectTask.php b/app/Models/ProjectTask.php
index 6f1f6fe1..ac8bd8d6 100644
--- a/app/Models/ProjectTask.php
+++ b/app/Models/ProjectTask.php
@@ -626,6 +626,12 @@ class ProjectTask extends AbstractModel
     public function deleteTask($pushMsg = true)
     {
         AbstractModel::transaction(function () {
+            if ($this->dialog_id) {
+                $dialog = WebSocketDialog::find($this->dialog_id);
+                if ($dialog) {
+                    $dialog->deleteDialog();
+                }
+            }
             $this->delete();
             $this->addLog("删除{任务}：" . $this->name);
         });
diff --git a/app/Models/WebSocketDialog.php b/app/Models/WebSocketDialog.php
index a92362cf..b6d5e367 100644
--- a/app/Models/WebSocketDialog.php
+++ b/app/Models/WebSocketDialog.php
@@ -3,6 +3,7 @@
 namespace App\Models;
 
 use App\Exceptions\ApiException;
+use Carbon\Carbon;
 use Illuminate\Database\Eloquent\SoftDeletes;
 
 /**
@@ -47,6 +48,21 @@ class WebSocketDialog extends AbstractModel
         return $this->hasMany(WebSocketDialogUser::class, 'dialog_id', 'id');
     }
 
+    /**
+     * 删除会话
+     * @return bool
+     */
+    public function deleteDialog()
+    {
+        AbstractModel::transaction(function () {
+            WebSocketDialogMsgRead::whereDialogId($this->id)->whereNull('read_at')->update([
+                'read_at' => Carbon::now()
+            ]);
+            $this->delete();
+        });
+        return true;
+    }
+
     /**
      * 获取对话（同时检验对话身份）
      * @param $id