diff --git a/message.go b/message.go
index fbedc72..09279f1 100644
--- a/message.go
+++ b/message.go
@@ -601,13 +601,27 @@ func (s *SentMessage) CanRevoke() bool {
 }
 
 // ForwardToFriends 转发该消息给好友
+// 该方法会阻塞直到所有好友都接收到消息
+// 这里为了兼容以前的版本，默认休眠0.5秒，如果需要更快的速度，可以使用 SentMessage.ForwardToFriendsWithDelay
 func (s *SentMessage) ForwardToFriends(friends ...*Friend) error {
-	return s.Self.ForwardMessageToFriends(s, friends...)
+	return s.ForwardToFriendsWithDelay(time.Second/2, friends...)
+}
+
+// ForwardToFriendsWithDelay 转发该消息给好友，延迟指定时间
+func (s *SentMessage) ForwardToFriendsWithDelay(delay time.Duration, friends ...*Friend) error {
+	return s.Self.ForwardMessageToFriends(s, delay, friends...)
 }
 
 // ForwardToGroups 转发该消息给群组
+// 该方法会阻塞直到所有群组都接收到消息
+// 这里为了兼容以前的版本，默认休眠0.5秒，如果需要更快的速度，可以使用 SentMessage.ForwardToGroupsDelay
 func (s *SentMessage) ForwardToGroups(groups ...*Group) error {
-	return s.Self.ForwardMessageToGroups(s, groups...)
+	return s.ForwardToGroupsWithDelay(time.Second/2, groups...)
+}
+
+// ForwardToGroupsWithDelay 转发该消息给群组， 延迟指定时间
+func (s *SentMessage) ForwardToGroupsWithDelay(delay time.Duration, groups ...*Group) error {
+	return s.Self.ForwardMessageToGroups(s, delay, groups...)
 }
 
 type appmsg struct {
diff --git a/relations.go b/relations.go
index 17a89b9..f7c2d84 100644
--- a/relations.go
+++ b/relations.go
@@ -104,69 +104,42 @@ func (f Friends) AsMembers() Members {
 }
 
 // SendText 向slice的好友依次发送文本消息
-func (f Friends) SendText(text string, delay ...time.Duration) error {
-	total := getTotalDuration(delay...)
-	var (
-		sentMessage *SentMessage
-		err         error
-		self        *Self
-	)
-	for _, friend := range f {
-		self = friend.Self
-		time.Sleep(total)
-		if sentMessage != nil {
-			err = self.ForwardMessageToFriends(sentMessage, f...)
-			return err
-		}
-		if sentMessage, err = friend.SendText(text); err != nil {
-			return err
-		}
+func (f Friends) SendText(text string, delays ...time.Duration) error {
+	if f.Count() == 0 {
+		return nil
 	}
-	return nil
+	var delay time.Duration
+	if len(delays) > 0 {
+		delay = delays[0]
+	}
+	self := f.First().Self
+	return self.SendTextToFriends(text, delay, f...)
 }
 
 // SendImage 向slice的好友依次发送图片消息
-func (f Friends) SendImage(file *os.File, delay ...time.Duration) error {
-	total := getTotalDuration(delay...)
-	var (
-		sentMessage *SentMessage
-		err         error
-		self        *Self
-	)
-	for _, friend := range f {
-		self = friend.Self
-		time.Sleep(total)
-		if sentMessage != nil {
-			err = self.ForwardMessageToFriends(sentMessage, f...)
-			return err
-		}
-		if sentMessage, err = friend.SendImage(file); err != nil {
-			return err
-		}
+func (f Friends) SendImage(file *os.File, delays ...time.Duration) error {
+	if f.Count() == 0 {
+		return nil
 	}
-	return nil
+	var delay time.Duration
+	if len(delays) > 0 {
+		delay = delays[0]
+	}
+	self := f.First().Self
+	return self.SendImageToFriends(file, delay, f...)
 }
 
 // SendFile 群发文件
 func (f Friends) SendFile(file *os.File, delay ...time.Duration) error {
-	total := getTotalDuration(delay...)
-	var (
-		sentMessage *SentMessage
-		err         error
-		self        *Self
-	)
-	for _, friend := range f {
-		self = friend.Self
-		time.Sleep(total)
-		if sentMessage != nil {
-			err = self.ForwardMessageToFriends(sentMessage, f...)
-			return err
-		}
-		if sentMessage, err = friend.SendFile(file); err != nil {
-			return err
-		}
+	if f.Count() == 0 {
+		return nil
 	}
-	return nil
+	var d time.Duration
+	if len(delay) > 0 {
+		d = delay[0]
+	}
+	self := f.First().Self
+	return self.SendFileToFriends(file, d, f...)
 }
 
 type Group struct{ *User }
@@ -247,46 +220,41 @@ func (g Groups) Last() *Group {
 
 // SendText 向群组依次发送文本消息, 支持发送延迟
 func (g Groups) SendText(text string, delay ...time.Duration) error {
-	total := getTotalDuration(delay...)
-	var (
-		sentMessage *SentMessage
-		err         error
-		self        *Self
-	)
-	for _, group := range g {
-		self = group.Self
-		time.Sleep(total)
-		if sentMessage != nil {
-			err = self.ForwardMessageToGroups(sentMessage, g...)
-			return err
-		}
-		if sentMessage, err = group.SendText(text); err != nil {
-			return err
-		}
+	if g.Count() == 0 {
+		return nil
 	}
-	return nil
+	var d time.Duration
+	if len(delay) > 0 {
+		d = delay[0]
+	}
+	self := g.First().Self
+	return self.SendTextToGroups(text, d, g...)
 }
 
 // SendImage 向群组依次发送图片消息, 支持发送延迟
 func (g Groups) SendImage(file *os.File, delay ...time.Duration) error {
-	total := getTotalDuration(delay...)
-	var (
-		sentMessage *SentMessage
-		err         error
-		self        *Self
-	)
-	for _, group := range g {
-		self = group.Self
-		time.Sleep(total)
-		if sentMessage != nil {
-			err = self.ForwardMessageToGroups(sentMessage, g...)
-			return err
-		}
-		if sentMessage, err = group.SendImage(file); err != nil {
-			return err
-		}
+	if g.Count() == 0 {
+		return nil
 	}
-	return nil
+	var d time.Duration
+	if len(delay) > 0 {
+		d = delay[0]
+	}
+	self := g.First().Self
+	return self.SendImageToGroups(file, d, g...)
+}
+
+// SendFile 向群组依次发送文件消息, 支持发送延迟
+func (g Groups) SendFile(file *os.File, delay ...time.Duration) error {
+	if g.Count() == 0 {
+		return nil
+	}
+	var d time.Duration
+	if len(delay) > 0 {
+		d = delay[0]
+	}
+	self := g.First().Self
+	return self.SendFileToGroups(file, d, g...)
 }
 
 // SearchByUserName 根据用户名查找群组
diff --git a/user.go b/user.go
index 691c644..e57da6c 100644
--- a/user.go
+++ b/user.go
@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"os"
 	"strings"
+	"time"
 )
 
 // User 抽象的用户结构: 好友 群组 公众号
@@ -430,7 +431,7 @@ func (s *Self) RevokeMessage(msg *SentMessage) error {
 }
 
 // 转发消息接口
-func (s *Self) forwardMessage(msg *SentMessage, users ...*User) error {
+func (s *Self) forwardMessage(msg *SentMessage, delay time.Duration, users ...*User) error {
 	info := s.Bot.Storage.LoginInfo
 	req := s.Bot.Storage.Request
 	switch msg.Type {
@@ -438,43 +439,148 @@ func (s *Self) forwardMessage(msg *SentMessage, users ...*User) error {
 		for _, user := range users {
 			msg.FromUserName = s.UserName
 			msg.ToUserName = user.UserName
-			_, err := s.Self.Bot.Caller.WebWxSendMsg(msg.SendMessage, info, req)
-			return err
+			if _, err := s.Self.Bot.Caller.WebWxSendMsg(msg.SendMessage, info, req); err != nil {
+				return err
+			}
+			time.Sleep(delay)
 		}
 	case MsgTypeImage:
 		for _, user := range users {
 			msg.FromUserName = s.UserName
 			msg.ToUserName = user.UserName
-			_, err := s.Self.Bot.Caller.Client.WebWxSendMsgImg(msg.SendMessage, req, info)
-			return err
+			if _, err := s.Self.Bot.Caller.Client.WebWxSendMsgImg(msg.SendMessage, req, info); err != nil {
+				return err
+			}
+			time.Sleep(delay)
 		}
 	case AppMessage:
 		for _, user := range users {
 			msg.FromUserName = s.UserName
 			msg.ToUserName = user.UserName
-			_, err := s.Self.Bot.Caller.Client.WebWxSendAppMsg(msg.SendMessage, req)
-			return err
+			if _, err := s.Self.Bot.Caller.Client.WebWxSendAppMsg(msg.SendMessage, req); err != nil {
+				return err
+			}
+			time.Sleep(delay)
 		}
+	default:
+		return fmt.Errorf("unsupported message type: %s", msg.Type)
 	}
-	return errors.New("unsupport message")
+	return nil
 }
 
 // ForwardMessageToFriends 转发给好友
-func (s *Self) ForwardMessageToFriends(msg *SentMessage, friends ...*Friend) error {
-	var users = make([]*User, len(friends))
-	for index, friend := range friends {
-		users[index] = friend.User
-	}
-	return s.forwardMessage(msg, users...)
+func (s *Self) ForwardMessageToFriends(msg *SentMessage, delay time.Duration, friends ...*Friend) error {
+	members := Friends(friends).AsMembers()
+	return s.forwardMessage(msg, delay, members...)
 }
 
 // ForwardMessageToGroups 转发给群组
-func (s *Self) ForwardMessageToGroups(msg *SentMessage, groups ...*Group) error {
-	var users = make([]*User, len(groups))
-	for index, group := range groups {
-		users[index] = group.User
+func (s *Self) ForwardMessageToGroups(msg *SentMessage, delay time.Duration, groups ...*Group) error {
+	members := Groups(groups).AsMembers()
+	return s.forwardMessage(msg, delay, members...)
+}
+
+// sendTextToMembers 发送文本消息给群组或者好友
+func (s *Self) sendTextToMembers(text string, delay time.Duration, members ...*User) error {
+	if len(members) == 0 {
+		return nil
 	}
-	return s.forwardMessage(msg, users...)
+	user := members[0]
+	msg, err := s.sendTextToUser(user, text)
+	if err != nil {
+		return err
+	}
+	time.Sleep(delay)
+	return s.forwardMessage(msg, delay, members[1:]...)
+}
+
+// sendImageToMembers 发送图片消息给群组或者好友
+func (s *Self) sendImageToMembers(img *os.File, delay time.Duration, members ...*User) error {
+	if len(members) == 0 {
+		return nil
+	}
+	user := members[0]
+	msg, err := s.sendImageToUser(user, img)
+	if err != nil {
+		return err
+	}
+	time.Sleep(delay)
+	return s.forwardMessage(msg, delay, members[1:]...)
+}
+
+// sendVideoToMembers 发送视频消息给群组或者好友
+func (s *Self) sendVideoToMembers(video *os.File, delay time.Duration, members ...*User) error {
+	if len(members) == 0 {
+		return nil
+	}
+	user := members[0]
+	msg, err := s.sendVideoToUser(user, video)
+	if err != nil {
+		return err
+	}
+	time.Sleep(delay)
+	return s.forwardMessage(msg, delay, members[1:]...)
+}
+
+func (s *Self) sendFileToMembers(file *os.File, delay time.Duration, members ...*User) error {
+	if len(members) == 0 {
+		return nil
+	}
+	user := members[0]
+	msg, err := s.sendFileToUser(user, file)
+	if err != nil {
+		return err
+	}
+	time.Sleep(delay)
+	return s.forwardMessage(msg, delay, members[1:]...)
+}
+
+// SendTextToFriends 发送文本消息给好友
+func (s *Self) SendTextToFriends(text string, delay time.Duration, friends ...*Friend) error {
+	members := Friends(friends).AsMembers()
+	return s.sendTextToMembers(text, delay, members...)
+}
+
+// SendImageToFriends 发送图片消息给好友
+func (s *Self) SendImageToFriends(img *os.File, delay time.Duration, friends ...*Friend) error {
+	members := Friends(friends).AsMembers()
+	return s.sendImageToMembers(img, delay, members...)
+}
+
+// SendFileToFriends 发送文件给好友
+func (s *Self) SendFileToFriends(file *os.File, delay time.Duration, friends ...*Friend) error {
+	members := Friends(friends).AsMembers()
+	return s.sendFileToMembers(file, delay, members...)
+}
+
+// SendVideoToFriends 发送视频给好友
+func (s *Self) SendVideoToFriends(video *os.File, delay time.Duration, friends ...*Friend) error {
+	members := Friends(friends).AsMembers()
+	return s.sendVideoToMembers(video, delay, members...)
+}
+
+// SendTextToGroups 发送文本消息给群组
+func (s *Self) SendTextToGroups(text string, delay time.Duration, groups ...*Group) error {
+	members := Groups(groups).AsMembers()
+	return s.sendTextToMembers(text, delay, members...)
+}
+
+// SendImageToGroups 发送图片消息给群组
+func (s *Self) SendImageToGroups(img *os.File, delay time.Duration, groups ...*Group) error {
+	members := Groups(groups).AsMembers()
+	return s.sendImageToMembers(img, delay, members...)
+}
+
+// SendFileToGroups 发送文件给群组
+func (s *Self) SendFileToGroups(file *os.File, delay time.Duration, groups ...*Group) error {
+	members := Groups(groups).AsMembers()
+	return s.sendFileToMembers(file, delay, members...)
+}
+
+// SendVideoToGroups 发送视频给群组
+func (s *Self) SendVideoToGroups(video *os.File, delay time.Duration, groups ...*Group) error {
+	members := Groups(groups).AsMembers()
+	return s.sendVideoToMembers(video, delay, members...)
 }
 
 // Members 抽象的用户组