diff --git a/coolq/api.go b/coolq/api.go
index b3efcaf..929faa8 100644
--- a/coolq/api.go
+++ b/coolq/api.go
@@ -540,7 +540,7 @@ func (bot *CQBot) CQSendGroupMessage(groupID int64, m gjson.Result, autoEscape b
 
 	var elem []message.IMessageElement
 	if m.Type == gjson.JSON {
-		elem = bot.ConvertObjectMessage(m, true)
+		elem = bot.ConvertObjectMessage(m, MessageSourceGroup)
 	} else {
 		str := m.String()
 		if str == "" {
@@ -550,7 +550,7 @@ func (bot *CQBot) CQSendGroupMessage(groupID int64, m gjson.Result, autoEscape b
 		if autoEscape {
 			elem = []message.IMessageElement{message.NewText(str)}
 		} else {
-			elem = bot.ConvertStringMessage(str, true)
+			elem = bot.ConvertStringMessage(str, MessageSourceGroup)
 		}
 	}
 	fixAt(elem)
@@ -580,9 +580,8 @@ func (bot *CQBot) CQSendGuildChannelMessage(guildID, channelID uint64, m gjson.R
 		return Failed(100, "CHANNEL_NOT_SUPPORTED_TEXT_MSG", "子频道类型错误, 无法发送文本信息")
 	}
 	var elem []message.IMessageElement
-	// todo: 将 converter 适配频道或者为频道单独写一个
 	if m.Type == gjson.JSON {
-		elem = bot.ConvertObjectMessage(m, true)
+		elem = bot.ConvertObjectMessage(m, MessageSourceGuildChannel)
 	} else {
 		str := m.String()
 		if str == "" {
@@ -592,7 +591,7 @@ func (bot *CQBot) CQSendGuildChannelMessage(guildID, channelID uint64, m gjson.R
 		if autoEscape {
 			elem = []message.IMessageElement{message.NewText(str)}
 		} else {
-			elem = bot.ConvertStringMessage(str, true)
+			elem = bot.ConvertStringMessage(str, MessageSourceGuildChannel)
 		}
 	}
 	mid := bot.SendGuildChannelMessage(guildID, channelID, &message.SendingMessage{Elements: elem})
@@ -658,7 +657,7 @@ func (bot *CQBot) CQSendGroupForwardMessage(groupID int64, m gjson.Result) globa
 						}
 						return int32(msgTime)
 					}(),
-					Message: resolveElement(bot.ConvertContentMessage(m.Content, true)),
+					Message: resolveElement(bot.ConvertContentMessage(m.Content, MessageSourceGroup)),
 				}
 			}
 			log.Warnf("警告: 引用消息 %v 错误或数据库未开启.", e.Get("data.id").Str)
@@ -697,7 +696,7 @@ func (bot *CQBot) CQSendGroupForwardMessage(groupID int64, m gjson.Result) globa
 				}
 			}
 		}
-		content := bot.ConvertObjectMessage(e.Get("data.content"), true)
+		content := bot.ConvertObjectMessage(e.Get("data.content"), MessageSourceGroup)
 		if uin != 0 && name != "" && len(content) > 0 {
 			return &message.ForwardNode{
 				SenderId:   uin,
@@ -744,7 +743,7 @@ func (bot *CQBot) CQSendGroupForwardMessage(groupID int64, m gjson.Result) globa
 func (bot *CQBot) CQSendPrivateMessage(userID int64, groupID int64, m gjson.Result, autoEscape bool) global.MSG {
 	var elem []message.IMessageElement
 	if m.Type == gjson.JSON {
-		elem = bot.ConvertObjectMessage(m, false)
+		elem = bot.ConvertObjectMessage(m, MessageSourcePrivate)
 	} else {
 		str := m.String()
 		if str == "" {
@@ -753,7 +752,7 @@ func (bot *CQBot) CQSendPrivateMessage(userID int64, groupID int64, m gjson.Resu
 		if autoEscape {
 			elem = []message.IMessageElement{message.NewText(str)}
 		} else {
-			elem = bot.ConvertStringMessage(str, false)
+			elem = bot.ConvertStringMessage(str, MessageSourcePrivate)
 		}
 	}
 	mid := bot.SendPrivateMessage(userID, groupID, &message.SendingMessage{Elements: elem})
@@ -1339,7 +1338,7 @@ func (bot *CQBot) CQGetForwardMessage(resID string) global.MSG {
 				"nickname": n.SenderName,
 			},
 			"time":    n.Time,
-			"content": ToFormattedMessage(n.Message, 0, false),
+			"content": ToFormattedMessage(n.Message, MessageSource{SourceType: MessageSourceGroup}, false),
 		})
 	}
 	return OK(global.MSG{
@@ -1373,9 +1372,9 @@ func (bot *CQBot) CQGetMessage(messageID int32) global.MSG {
 	switch o := msg.(type) {
 	case *db.StoredGroupMessage:
 		m["group_id"] = o.GroupCode
-		m["message"] = ToFormattedMessage(bot.ConvertContentMessage(o.Content, true), o.GroupCode, false)
+		m["message"] = ToFormattedMessage(bot.ConvertContentMessage(o.Content, MessageSourceGroup), MessageSource{SourceType: MessageSourceGroup, PrimaryID: uint64(o.GroupCode)}, false)
 	case *db.StoredPrivateMessage:
-		m["message"] = ToFormattedMessage(bot.ConvertContentMessage(o.Content, false), 0, false)
+		m["message"] = ToFormattedMessage(bot.ConvertContentMessage(o.Content, MessageSourcePrivate), MessageSource{SourceType: MessageSourcePrivate}, false)
 	}
 	return OK(m)
 }
@@ -1474,7 +1473,7 @@ func (bot *CQBot) CQCanSendRecord() global.MSG {
 // @alias(.ocr_image)
 // @rename(image_id->image)
 func (bot *CQBot) CQOcrImage(imageID string) global.MSG {
-	img, err := bot.makeImageOrVideoElem(map[string]string{"file": imageID}, false, true)
+	img, err := bot.makeImageOrVideoElem(map[string]string{"file": imageID}, false, MessageSourceGroup)
 	if err != nil {
 		log.Warnf("load image error: %v", err)
 		return Failed(100, "LOAD_FILE_ERROR", err.Error())
diff --git a/coolq/bot.go b/coolq/bot.go
index f54f8b3..4a9f702 100644
--- a/coolq/bot.go
+++ b/coolq/bot.go
@@ -523,76 +523,6 @@ func (bot *CQBot) dispatchEventMessage(m global.MSG) {
 	global.PutBuffer(event.buffer)
 }
 
-func (bot *CQBot) formatGroupMessage(m *message.GroupMessage) global.MSG {
-	cqm := ToStringMessage(m.Elements, m.GroupCode, true)
-	gm := global.MSG{
-		"anonymous":    nil,
-		"font":         0,
-		"group_id":     m.GroupCode,
-		"message":      ToFormattedMessage(m.Elements, m.GroupCode, false),
-		"message_type": "group",
-		"message_seq":  m.Id,
-		"post_type": func() string {
-			if m.Sender.Uin == bot.Client.Uin {
-				return "message_sent"
-			}
-			return "message"
-		}(),
-		"raw_message": cqm,
-		"self_id":     bot.Client.Uin,
-		"sender": global.MSG{
-			"age":     0,
-			"area":    "",
-			"level":   "",
-			"sex":     "unknown",
-			"user_id": m.Sender.Uin,
-		},
-		"sub_type": "normal",
-		"time":     m.Time,
-		"user_id":  m.Sender.Uin,
-	}
-	if m.Sender.IsAnonymous() {
-		gm["anonymous"] = global.MSG{
-			"flag": m.Sender.AnonymousInfo.AnonymousId + "|" + m.Sender.AnonymousInfo.AnonymousNick,
-			"id":   m.Sender.Uin,
-			"name": m.Sender.AnonymousInfo.AnonymousNick,
-		}
-		gm["sender"].(global.MSG)["nickname"] = "匿名消息"
-		gm["sub_type"] = "anonymous"
-	} else {
-		group := bot.Client.FindGroup(m.GroupCode)
-		mem := group.FindMember(m.Sender.Uin)
-		if mem == nil {
-			log.Warnf("获取 %v 成员信息失败，尝试刷新成员列表", m.Sender.Uin)
-			t, err := bot.Client.GetGroupMembers(group)
-			if err != nil {
-				log.Warnf("刷新群 %v 成员列表失败: %v", group.Uin, err)
-				return nil
-			}
-			group.Members = t
-			mem = group.FindMember(m.Sender.Uin)
-			if mem == nil {
-				return nil
-			}
-		}
-		ms := gm["sender"].(global.MSG)
-		switch mem.Permission {
-		case client.Owner:
-			ms["role"] = "owner"
-		case client.Administrator:
-			ms["role"] = "admin"
-		case client.Member:
-			ms["role"] = "member"
-		default:
-			ms["role"] = "member"
-		}
-		ms["nickname"] = mem.Nickname
-		ms["card"] = mem.CardName
-		ms["title"] = mem.SpecialTitle
-	}
-	return gm
-}
-
 func formatGroupName(group *client.GroupInfo) string {
 	return fmt.Sprintf("%s(%d)", group.Name, group.Code)
 }
diff --git a/coolq/converter.go b/coolq/converter.go
index 44b1e14..7e72249 100644
--- a/coolq/converter.go
+++ b/coolq/converter.go
@@ -2,7 +2,9 @@ package coolq
 
 import (
 	"github.com/Mrs4s/MiraiGo/client"
+	"github.com/Mrs4s/MiraiGo/message"
 	"github.com/Mrs4s/go-cqhttp/global"
+	log "github.com/sirupsen/logrus"
 	"strconv"
 )
 
@@ -55,6 +57,80 @@ func convertGuildMemberInfo(m *client.GuildMemberInfo) global.MSG {
 	}
 }
 
+func (bot *CQBot) formatGroupMessage(m *message.GroupMessage) global.MSG {
+	source := MessageSource{
+		SourceType: MessageSourceGroup,
+		PrimaryID:  uint64(m.GroupCode),
+	}
+	cqm := ToStringMessage(m.Elements, source, true)
+	gm := global.MSG{
+		"anonymous":    nil,
+		"font":         0,
+		"group_id":     m.GroupCode,
+		"message":      ToFormattedMessage(m.Elements, source, false),
+		"message_type": "group",
+		"message_seq":  m.Id,
+		"post_type": func() string {
+			if m.Sender.Uin == bot.Client.Uin {
+				return "message_sent"
+			}
+			return "message"
+		}(),
+		"raw_message": cqm,
+		"self_id":     bot.Client.Uin,
+		"sender": global.MSG{
+			"age":     0,
+			"area":    "",
+			"level":   "",
+			"sex":     "unknown",
+			"user_id": m.Sender.Uin,
+		},
+		"sub_type": "normal",
+		"time":     m.Time,
+		"user_id":  m.Sender.Uin,
+	}
+	if m.Sender.IsAnonymous() {
+		gm["anonymous"] = global.MSG{
+			"flag": m.Sender.AnonymousInfo.AnonymousId + "|" + m.Sender.AnonymousInfo.AnonymousNick,
+			"id":   m.Sender.Uin,
+			"name": m.Sender.AnonymousInfo.AnonymousNick,
+		}
+		gm["sender"].(global.MSG)["nickname"] = "匿名消息"
+		gm["sub_type"] = "anonymous"
+	} else {
+		group := bot.Client.FindGroup(m.GroupCode)
+		mem := group.FindMember(m.Sender.Uin)
+		if mem == nil {
+			log.Warnf("获取 %v 成员信息失败，尝试刷新成员列表", m.Sender.Uin)
+			t, err := bot.Client.GetGroupMembers(group)
+			if err != nil {
+				log.Warnf("刷新群 %v 成员列表失败: %v", group.Uin, err)
+				return nil
+			}
+			group.Members = t
+			mem = group.FindMember(m.Sender.Uin)
+			if mem == nil {
+				return nil
+			}
+		}
+		ms := gm["sender"].(global.MSG)
+		switch mem.Permission {
+		case client.Owner:
+			ms["role"] = "owner"
+		case client.Administrator:
+			ms["role"] = "admin"
+		case client.Member:
+			ms["role"] = "member"
+		default:
+			ms["role"] = "member"
+		}
+		ms["nickname"] = mem.Nickname
+		ms["card"] = mem.CardName
+		ms["title"] = mem.SpecialTitle
+	}
+	return gm
+}
+
 func convertChannelInfo(c *client.ChannelInfo) global.MSG {
 	slowModes := make([]global.MSG, 0, len(c.Meta.SlowModes))
 	for _, mode := range c.Meta.SlowModes {
diff --git a/coolq/cqcode.go b/coolq/cqcode.go
index 14feeea..5d436ff 100644
--- a/coolq/cqcode.go
+++ b/coolq/cqcode.go
@@ -36,11 +36,6 @@ var typeReg = regexp.MustCompile(`\[CQ:(\w+)`)
 var paramReg = regexp.MustCompile(`,([\w\-.]+?)=([^,\]]+)`)
 */
 
-const (
-	maxImageSize = 1024 * 1024 * 30  // 30MB
-	maxVideoSize = 1024 * 1024 * 100 // 100MB
-)
-
 // PokeElement 拍一拍
 type PokeElement struct {
 	Target int64
@@ -73,6 +68,27 @@ type LocalVideoElement struct {
 	thumb io.ReadSeeker
 }
 
+// MessageSource 消息来源
+// 如果为私聊或者群聊, PrimaryID 将代表群号/QQ号
+// 如果为频道, PrimaryID 为 GuildID, SubID 为 ChannelID
+type MessageSource struct {
+	SourceType MessageSourceType
+	PrimaryID  uint64
+	SubID      uint64
+}
+
+// MessageSourceType 消息来源类型
+type MessageSourceType int32
+
+const (
+	maxImageSize = 1024 * 1024 * 30  // 30MB
+	maxVideoSize = 1024 * 1024 * 100 // 100MB
+
+	MessageSourcePrivate      MessageSourceType = 0
+	MessageSourceGroup        MessageSourceType = 1
+	MessageSourceGuildChannel MessageSourceType = 2
+)
+
 // Type implements the message.IMessageElement.
 func (e *LocalImageElement) Type() message.ElementType {
 	return message.Image
@@ -114,16 +130,16 @@ func (e *PokeElement) Type() message.ElementType {
 }
 
 // ToArrayMessage 将消息元素数组转为MSG数组以用于消息上报
-func ToArrayMessage(e []message.IMessageElement, groupID int64) (r []global.MSG) {
+func ToArrayMessage(e []message.IMessageElement, source MessageSource) (r []global.MSG) {
 	r = make([]global.MSG, 0, len(e))
 	m := &message.SendingMessage{Elements: e}
 	reply := m.FirstOrNil(func(e message.IMessageElement) bool {
 		_, ok := e.(*message.ReplyElement)
 		return ok
 	})
-	if reply != nil {
+	if reply != nil && source.SourceType == MessageSourceGroup {
 		replyElem := reply.(*message.ReplyElement)
-		rid := groupID
+		rid := int64(source.PrimaryID)
 		if rid == 0 {
 			rid = replyElem.Sender
 		}
@@ -138,7 +154,7 @@ func ToArrayMessage(e []message.IMessageElement, groupID int64) (r []global.MSG)
 					"seq":  strconv.FormatInt(int64(replyElem.ReplySeq), 10),
 					"qq":   strconv.FormatInt(replyElem.Sender, 10),
 					"time": strconv.FormatInt(int64(replyElem.Time), 10),
-					"text": ToStringMessage(replyElem.Elements, groupID),
+					"text": ToStringMessage(replyElem.Elements, source),
 				},
 			})
 		} else {
@@ -260,7 +276,7 @@ func ToArrayMessage(e []message.IMessageElement, groupID int64) (r []global.MSG)
 }
 
 // ToStringMessage 将消息元素数组转为字符串以用于消息上报
-func ToStringMessage(e []message.IMessageElement, groupID int64, isRaw ...bool) (r string) {
+func ToStringMessage(e []message.IMessageElement, source MessageSource, isRaw ...bool) (r string) {
 	sb := global.NewBuffer()
 	sb.Reset()
 	write := func(format string, a ...interface{}) {
@@ -276,9 +292,9 @@ func ToStringMessage(e []message.IMessageElement, groupID int64, isRaw ...bool)
 		_, ok := e.(*message.ReplyElement)
 		return ok
 	})
-	if reply != nil {
+	if reply != nil && source.SourceType == MessageSourceGroup {
 		replyElem := reply.(*message.ReplyElement)
-		rid := groupID
+		rid := int64(source.PrimaryID)
 		if rid == 0 {
 			rid = replyElem.Sender
 		}
@@ -289,7 +305,7 @@ func ToStringMessage(e []message.IMessageElement, groupID int64, isRaw ...bool)
 			write("[CQ:reply,id=%d,seq=%d,qq=%d,time=%d,text=%s]",
 				db.ToGlobalID(rid, replyElem.ReplySeq),
 				replyElem.ReplySeq, replyElem.Sender, replyElem.Time,
-				CQCodeEscapeValue(ToStringMessage(replyElem.Elements, groupID)))
+				CQCodeEscapeValue(ToStringMessage(replyElem.Elements, source)))
 		} else {
 			write("[CQ:reply,id=%d]", db.ToGlobalID(rid, replyElem.ReplySeq))
 		}
@@ -352,6 +368,8 @@ func ToStringMessage(e []message.IMessageElement, groupID int64, isRaw ...bool)
 			} else {
 				write("[CQ:image,file=%s,url=%s%s]", hex.EncodeToString(o.Md5)+".image", CQCodeEscapeValue(o.Url), arg)
 			}
+		case *message.GuildImageElement:
+			write("[CQ:image,file=%s,url=%s]", hex.EncodeToString(o.Md5)+".image", CQCodeEscapeValue(o.Url))
 		case *message.DiceElement:
 			write("[CQ:dice,value=%v]", o.Value)
 		case *message.MarketFaceElement:
@@ -480,7 +498,7 @@ func ToMessageContent(e []message.IMessageElement) (r []global.MSG) {
 }
 
 // ConvertStringMessage 将消息字符串转为消息元素数组
-func (bot *CQBot) ConvertStringMessage(raw string, isGroup bool) (r []message.IMessageElement) {
+func (bot *CQBot) ConvertStringMessage(raw string, sourceType MessageSourceType) (r []message.IMessageElement) {
 	var t, key string
 	d := map[string]string{}
 
@@ -516,7 +534,7 @@ func (bot *CQBot) ConvertStringMessage(raw string, isGroup bool) (r []message.IM
 						ReplySeq: org.GetAttribute().MessageSeq,
 						Sender:   org.GetAttribute().SenderUin,
 						Time:     int32(org.GetAttribute().Timestamp),
-						Elements: bot.ConvertStringMessage(customText, isGroup),
+						Elements: bot.ConvertStringMessage(customText, sourceType),
 					}
 					if senderErr != nil {
 						elem.Sender = sender
@@ -532,7 +550,7 @@ func (bot *CQBot) ConvertStringMessage(raw string, isGroup bool) (r []message.IM
 						ReplySeq: int32(messageSeq),
 						Sender:   sender,
 						Time:     int32(msgTime),
-						Elements: bot.ConvertStringMessage(customText, isGroup),
+						Elements: bot.ConvertStringMessage(customText, sourceType),
 					}
 				}
 				r = append([]message.IMessageElement{elem}, r...)
@@ -544,7 +562,7 @@ func (bot *CQBot) ConvertStringMessage(raw string, isGroup bool) (r []message.IM
 							ReplySeq: org.GetAttribute().MessageSeq,
 							Sender:   org.GetAttribute().SenderUin,
 							Time:     int32(org.GetAttribute().Timestamp),
-							Elements: bot.ConvertContentMessage(org.GetContent(), isGroup),
+							Elements: bot.ConvertContentMessage(org.GetContent(), sourceType),
 						},
 					}, r...)
 				}
@@ -565,7 +583,7 @@ func (bot *CQBot) ConvertStringMessage(raw string, isGroup bool) (r []message.IM
 			}
 			return
 		}
-		elem, err := bot.ToElement(t, d, isGroup)
+		elem, err := bot.ToElement(t, d, sourceType)
 		if err != nil {
 			org := "[CQ:" + t
 			for k, v := range d {
@@ -653,11 +671,11 @@ func (bot *CQBot) ConvertStringMessage(raw string, isGroup bool) (r []message.IM
 }
 
 // ConvertObjectMessage 将消息JSON对象转为消息元素数组
-func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []message.IMessageElement) {
+func (bot *CQBot) ConvertObjectMessage(m gjson.Result, sourceType MessageSourceType) (r []message.IMessageElement) {
 	d := make(map[string]string)
 	convertElem := func(e gjson.Result) {
 		t := e.Get("type").Str
-		if t == "reply" && isGroup {
+		if t == "reply" && sourceType == MessageSourceGroup {
 			if len(r) > 0 {
 				if _, ok := r[0].(*message.ReplyElement); ok {
 					log.Warnf("警告: 一条信息只能包含一个 Reply 元素.")
@@ -688,7 +706,7 @@ func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []messag
 						ReplySeq: org.GetAttribute().MessageSeq,
 						Sender:   org.GetAttribute().SenderUin,
 						Time:     int32(org.GetAttribute().Timestamp),
-						Elements: bot.ConvertStringMessage(customText, isGroup),
+						Elements: bot.ConvertStringMessage(customText, sourceType),
 					}
 					if senderErr != nil {
 						elem.Sender = sender
@@ -704,7 +722,7 @@ func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []messag
 						ReplySeq: int32(messageSeq),
 						Sender:   sender,
 						Time:     int32(msgTime),
-						Elements: bot.ConvertStringMessage(customText, isGroup),
+						Elements: bot.ConvertStringMessage(customText, sourceType),
 					}
 				}
 				r = append([]message.IMessageElement{elem}, r...)
@@ -716,7 +734,7 @@ func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []messag
 							ReplySeq: org.GetAttribute().MessageSeq,
 							Sender:   org.GetAttribute().SenderUin,
 							Time:     int32(org.GetAttribute().Timestamp),
-							Elements: bot.ConvertContentMessage(org.GetContent(), isGroup),
+							Elements: bot.ConvertContentMessage(org.GetContent(), sourceType),
 						},
 					}, r...)
 				}
@@ -745,7 +763,7 @@ func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []messag
 			d[key.Str] = value.String()
 			return true
 		})
-		elem, err := bot.ToElement(t, d, isGroup)
+		elem, err := bot.ToElement(t, d, sourceType)
 		if err != nil {
 			log.Warnf("转换CQ码 (%v) 到MiraiGo Element时出现错误: %v 将忽略本段CQ码.", e.Raw, err)
 			return
@@ -758,7 +776,7 @@ func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []messag
 		}
 	}
 	if m.Type == gjson.String {
-		return bot.ConvertStringMessage(m.Str, isGroup)
+		return bot.ConvertStringMessage(m.Str, sourceType)
 	}
 	if m.IsArray() {
 		m.ForEach(func(_, e gjson.Result) bool {
@@ -773,14 +791,14 @@ func (bot *CQBot) ConvertObjectMessage(m gjson.Result, isGroup bool) (r []messag
 }
 
 // ConvertContentMessage 将数据库用的 content 转换为消息元素数组
-func (bot *CQBot) ConvertContentMessage(content []global.MSG, group bool) (r []message.IMessageElement) {
+func (bot *CQBot) ConvertContentMessage(content []global.MSG, sourceType MessageSourceType) (r []message.IMessageElement) {
 	for _, c := range content {
 		data := c["data"].(global.MSG)
 		switch c["type"] {
 		case "text":
 			r = append(r, message.NewText(data["text"].(string)))
 		case "image":
-			e, err := bot.makeImageOrVideoElem(map[string]string{"file": data["file"].(string)}, false, group)
+			e, err := bot.makeImageOrVideoElem(map[string]string{"file": data["file"].(string)}, false, sourceType)
 			if err != nil {
 				log.Warnf("make image elem error: %v", err)
 				continue
@@ -830,7 +848,7 @@ func (bot *CQBot) ConvertContentMessage(content []global.MSG, group bool) (r []m
 		case "face":
 			r = append(r, message.NewFace(data["id"].(int32)))
 		case "video":
-			e, err := bot.makeImageOrVideoElem(map[string]string{"file": data["file"].(string)}, true, group)
+			e, err := bot.makeImageOrVideoElem(map[string]string{"file": data["file"].(string)}, true, sourceType)
 			if err != nil {
 				log.Warnf("make image elem error: %v", err)
 				continue
@@ -846,7 +864,7 @@ func (bot *CQBot) ConvertContentMessage(content []global.MSG, group bool) (r []m
 // 返回 interface{} 存在三种类型
 //
 // message.IMessageElement []message.IMessageElement nil
-func (bot *CQBot) ToElement(t string, d map[string]string, isGroup bool) (m interface{}, err error) {
+func (bot *CQBot) ToElement(t string, d map[string]string, sourceType MessageSourceType) (m interface{}, err error) {
 	switch t {
 	case "text":
 		if base.SplitURL {
@@ -858,7 +876,7 @@ func (bot *CQBot) ToElement(t string, d map[string]string, isGroup bool) (m inte
 		}
 		return message.NewText(d["text"]), nil
 	case "image":
-		img, err := bot.makeImageOrVideoElem(d, false, isGroup)
+		img, err := bot.makeImageOrVideoElem(d, false, sourceType)
 		if err != nil {
 			return nil, err
 		}
@@ -892,7 +910,7 @@ func (bot *CQBot) ToElement(t string, d map[string]string, isGroup bool) (m inte
 		t, _ := strconv.ParseInt(d["qq"], 10, 64)
 		return &PokeElement{Target: t}, nil
 	case "gift":
-		if !isGroup {
+		if sourceType != MessageSourceGroup {
 			return nil, errors.New("private gift unsupported") // no free private gift
 		}
 		t, _ := strconv.ParseInt(d["qq"], 10, 64)
@@ -1088,13 +1106,13 @@ func (bot *CQBot) ToElement(t string, d map[string]string, isGroup bool) (m inte
 		maxWidth := parseIntWithDefault("maxwidth", 500)
 		minHeight := parseIntWithDefault("minheight", 200)
 		maxHeight := parseIntWithDefault("maxheight", 1000)
-		img, err := bot.makeImageOrVideoElem(d, false, isGroup)
+		img, err := bot.makeImageOrVideoElem(d, false, sourceType)
 		if err != nil {
 			return nil, errors.New("send cardimage faild")
 		}
-		return bot.makeShowPic(img, source, brief, icon, minWidth, minHeight, maxWidth, maxHeight, isGroup)
+		return bot.makeShowPic(img, source, brief, icon, minWidth, minHeight, maxWidth, maxHeight, sourceType == MessageSourceGroup)
 	case "video":
-		file, err := bot.makeImageOrVideoElem(d, true, isGroup)
+		file, err := bot.makeImageOrVideoElem(d, true, sourceType)
 		if err != nil {
 			return nil, err
 		}
@@ -1248,7 +1266,7 @@ func CQCodeUnescapeValue(content string) string {
 }
 
 // makeImageOrVideoElem 图片 elem 生成器，单独拎出来，用于公用
-func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video, group bool) (message.IMessageElement, error) {
+func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video bool, sourceType MessageSourceType) (message.IMessageElement, error) {
 	f := d["file"]
 	if strings.HasPrefix(f, "http") {
 		hash := md5.Sum([]byte(f))
@@ -1327,11 +1345,18 @@ func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video, group bool) (
 		b, _ := os.ReadFile(rawPath)
 		return bot.readVideoCache(b), nil
 	}
+	// 目前频道内上传的图片均无法被查询到, 需要单独处理
+	if sourceType == MessageSourceGuildChannel {
+		cacheFile := path.Join(global.ImagePath, "guild-images", f)
+		if global.PathExists(cacheFile) {
+			return &LocalImageElement{File: cacheFile}, nil
+		}
+	}
 	if strings.HasSuffix(f, ".image") && cache.EnableCacheDB {
 		hash, err := hex.DecodeString(strings.TrimSuffix(f, ".image"))
 		if err == nil {
 			if b := cache.Image.Get(hash); b != nil {
-				return bot.readImageCache(b, group)
+				return bot.readImageCache(b, sourceType)
 			}
 		}
 	}
@@ -1342,7 +1367,7 @@ func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video, group bool) (
 	}
 	if !exist {
 		if d["url"] != "" {
-			return bot.makeImageOrVideoElem(map[string]string{"file": d["url"]}, false, group)
+			return bot.makeImageOrVideoElem(map[string]string{"file": d["url"]}, false, sourceType)
 		}
 		return nil, errors.New("invalid image")
 	}
@@ -1353,10 +1378,10 @@ func (bot *CQBot) makeImageOrVideoElem(d map[string]string, video, group bool) (
 	if err != nil {
 		return nil, err
 	}
-	return bot.readImageCache(b, group)
+	return bot.readImageCache(b, sourceType)
 }
 
-func (bot *CQBot) readImageCache(b []byte, group bool) (message.IMessageElement, error) {
+func (bot *CQBot) readImageCache(b []byte, sourceType MessageSourceType) (message.IMessageElement, error) {
 	var err error
 	if len(b) < 20 {
 		return nil, errors.New("invalid cache")
@@ -1368,7 +1393,7 @@ func (bot *CQBot) readImageCache(b []byte, group bool) (message.IMessageElement,
 	imageURL := r.ReadString()
 	if size == 0 {
 		if imageURL != "" {
-			return bot.makeImageOrVideoElem(map[string]string{"file": imageURL}, false, group)
+			return bot.makeImageOrVideoElem(map[string]string{"file": imageURL}, false, sourceType)
 		}
 		return nil, errors.New("img size is 0")
 	}
@@ -1376,15 +1401,23 @@ func (bot *CQBot) readImageCache(b []byte, group bool) (message.IMessageElement,
 		return nil, errors.New("invalid hash")
 	}
 	var rsp message.IMessageElement
-	if group {
+	if sourceType == MessageSourceGroup {
 		rsp, err = bot.Client.QueryGroupImage(int64(rand.Uint32()), hash, size)
 		goto ok
 	}
+	if sourceType == MessageSourceGuildChannel {
+		if len(bot.Client.GuildService.Guilds) == 0 {
+			err = errors.New("cannot query guild image: not any joined guild")
+		}
+		guild := bot.Client.GuildService.Guilds[0]
+		rsp, err = bot.Client.GuildService.QueryImage(guild.GuildId, guild.Channels[0].ChannelId, hash, uint64(size))
+		goto ok
+	}
 	rsp, err = bot.Client.QueryFriendImage(int64(rand.Uint32()), hash, size)
 ok:
 	if err != nil {
 		if imageURL != "" {
-			return bot.makeImageOrVideoElem(map[string]string{"file": imageURL}, false, group)
+			return bot.makeImageOrVideoElem(map[string]string{"file": imageURL}, false, sourceType)
 		}
 		return nil, err
 	}
diff --git a/coolq/event.go b/coolq/event.go
index a9f4829..5e574e5 100644
--- a/coolq/event.go
+++ b/coolq/event.go
@@ -22,18 +22,22 @@ import (
 )
 
 // ToFormattedMessage 将给定[]message.IMessageElement转换为通过coolq.SetMessageFormat所定义的消息上报格式
-func ToFormattedMessage(e []message.IMessageElement, groupID int64, isRaw ...bool) (r interface{}) {
+func ToFormattedMessage(e []message.IMessageElement, source MessageSource, isRaw ...bool) (r interface{}) {
 	if base.PostFormat == "string" {
-		r = ToStringMessage(e, groupID, isRaw...)
+		r = ToStringMessage(e, source, isRaw...)
 	} else if base.PostFormat == "array" {
-		r = ToArrayMessage(e, groupID)
+		r = ToArrayMessage(e, source)
 	}
 	return
 }
 
 func (bot *CQBot) privateMessageEvent(c *client.QQClient, m *message.PrivateMessage) {
 	bot.checkMedia(m.Elements, m.Sender.Uin)
-	cqm := ToStringMessage(m.Elements, 0, true)
+	source := MessageSource{
+		SourceType: MessageSourcePrivate,
+		PrimaryID:  uint64(m.Sender.Uin),
+	}
+	cqm := ToStringMessage(m.Elements, source, true)
 	id := bot.InsertPrivateMessage(m)
 	log.Infof("收到好友 %v(%v) 的消息: %v (%v)", m.Sender.DisplayName(), m.Sender.Uin, cqm, id)
 	fm := global.MSG{
@@ -48,7 +52,7 @@ func (bot *CQBot) privateMessageEvent(c *client.QQClient, m *message.PrivateMess
 		"message_id":   id,
 		"user_id":      m.Sender.Uin,
 		"target_id":    m.Target,
-		"message":      ToFormattedMessage(m.Elements, 0, false),
+		"message":      ToFormattedMessage(m.Elements, source, false),
 		"raw_message":  cqm,
 		"font":         0,
 		"self_id":      c.Uin,
@@ -86,7 +90,11 @@ func (bot *CQBot) groupMessageEvent(c *client.QQClient, m *message.GroupMessage)
 			return
 		}
 	}
-	cqm := ToStringMessage(m.Elements, m.GroupCode, true)
+	source := MessageSource{
+		SourceType: MessageSourceGroup,
+		PrimaryID:  uint64(m.GroupCode),
+	}
+	cqm := ToStringMessage(m.Elements, source, true)
 	id := bot.InsertGroupMessage(m)
 	log.Infof("收到群 %v(%v) 内 %v(%v) 的消息: %v (%v)", m.GroupName, m.GroupCode, m.Sender.DisplayName(), m.Sender.Uin, cqm, id)
 	gm := bot.formatGroupMessage(m)
@@ -100,7 +108,11 @@ func (bot *CQBot) groupMessageEvent(c *client.QQClient, m *message.GroupMessage)
 func (bot *CQBot) tempMessageEvent(c *client.QQClient, e *client.TempMessageEvent) {
 	m := e.Message
 	bot.checkMedia(m.Elements, m.Sender.Uin)
-	cqm := ToStringMessage(m.Elements, 0, true)
+	source := MessageSource{
+		SourceType: MessageSourcePrivate,
+		PrimaryID:  uint64(e.Session.Sender),
+	}
+	cqm := ToStringMessage(m.Elements, source, true)
 	bot.tempSessionCache.Store(m.Sender.Uin, e.Session)
 	id := m.Id
 	// todo(Mrs4s)
@@ -115,7 +127,7 @@ func (bot *CQBot) tempMessageEvent(c *client.QQClient, e *client.TempMessageEven
 		"temp_source":  e.Session.Source,
 		"message_id":   id,
 		"user_id":      m.Sender.Uin,
-		"message":      ToFormattedMessage(m.Elements, 0, false),
+		"message":      ToFormattedMessage(m.Elements, source, false),
 		"raw_message":  cqm,
 		"font":         0,
 		"self_id":      c.Uin,
@@ -143,7 +155,12 @@ func (bot *CQBot) guildChannelMessageEvent(c *client.QQClient, m *message.GuildC
 			channel = c
 		}
 	}
-	log.Infof("收到来自频道 %v(%v) 子频道 %v(%v) 内 %v(%v) 的消息: %v", guild.GuildName, guild.GuildId, channel.ChannelName, m.ChannelId, m.Sender.Nickname, m.Sender.TinyId, ToStringMessage(m.Elements, 0, true))
+	source := MessageSource{
+		SourceType: MessageSourceGuildChannel,
+		PrimaryID:  m.GuildId,
+		SubID:      m.ChannelId,
+	}
+	log.Infof("收到来自频道 %v(%v) 子频道 %v(%v) 内 %v(%v) 的消息: %v", guild.GuildName, guild.GuildId, channel.ChannelName, m.ChannelId, m.Sender.Nickname, m.Sender.TinyId, ToStringMessage(m.Elements, source, true))
 	// todo: 数据库支持
 	bot.dispatchEventMessage(global.MSG{
 		"post_type":    "message",
@@ -153,7 +170,7 @@ func (bot *CQBot) guildChannelMessageEvent(c *client.QQClient, m *message.GuildC
 		"channel_id":   m.ChannelId,
 		"message_id":   fmt.Sprintf("%v-%v", m.Id, m.InternalId),
 		"user_id":      m.Sender.TinyId,
-		"message":      ToFormattedMessage(m.Elements, 0, false), // todo: 增加对频道消息 Reply 的支持
+		"message":      ToFormattedMessage(m.Elements, source, false), // todo: 增加对频道消息 Reply 的支持
 		"self_id":      bot.Client.Uin,
 		"self_tiny_id": bot.Client.GuildService.TinyId,
 		"time":         m.Time,
@@ -665,6 +682,12 @@ func (bot *CQBot) checkMedia(e []message.IMessageElement, sourceID int64) {
 			} else if !global.PathExists(path.Join(global.ImagePath, filename)) {
 				_ = os.WriteFile(path.Join(global.ImagePath, filename), data, 0o644)
 			}
+
+			if i.Url != "" && !global.PathExists(path.Join(global.ImagePath, "guild-images", filename)) {
+				if err := global.DownloadFile(i.Url, path.Join(global.ImagePath, "guild-images", filename), -1, map[string]string{}); err != nil {
+					log.Warnf("下载频道图片时出现错误: %v", err)
+				}
+			}
 		case *message.FriendImageElement:
 			data := binary.NewWriterF(func(w *binary.Writer) {
 				w.Write(i.Md5)
diff --git a/go.mod b/go.mod
index 96af2ab..f98ecd1 100644
--- a/go.mod
+++ b/go.mod
@@ -7,7 +7,7 @@ replace github.com/willf/bitset v1.2.0 => github.com/bits-and-blooms/bitset v1.2
 require (
 	github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f
 	github.com/Microsoft/go-winio v0.5.1
-	github.com/Mrs4s/MiraiGo v0.0.0-20211111181749-b85fc25cd59b
+	github.com/Mrs4s/MiraiGo v0.0.0-20211112183036-d3a21e577b02
 	github.com/dustin/go-humanize v1.0.0
 	github.com/fumiama/go-hide-param v0.1.4
 	github.com/gabriel-vasile/mimetype v1.4.0
diff --git a/go.sum b/go.sum
index 9cf1be2..737922e 100644
--- a/go.sum
+++ b/go.sum
@@ -3,8 +3,8 @@ github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f/g
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/Microsoft/go-winio v0.5.1 h1:aPJp2QD7OOrhO5tQXqQoGSJc+DjDtWTGLOmNyAm6FgY=
 github.com/Microsoft/go-winio v0.5.1/go.mod h1:JPGBdM1cNvN/6ISo+n8V5iA4v8pBzdOpzfwIujj1a84=
-github.com/Mrs4s/MiraiGo v0.0.0-20211111181749-b85fc25cd59b h1:tu/xKD248MLJL63zH/gJttk0u3t4aaMV+GNsU5EmIEc=
-github.com/Mrs4s/MiraiGo v0.0.0-20211111181749-b85fc25cd59b/go.mod h1:imVKbfKqqeit+C/eaWGb4MKQ3z3gN6pRpBU5RMtp5so=
+github.com/Mrs4s/MiraiGo v0.0.0-20211112183036-d3a21e577b02 h1:D2a93R7eugdAfuZtVXYznjqGrKlfvtWQ0YTHnwJYq8U=
+github.com/Mrs4s/MiraiGo v0.0.0-20211112183036-d3a21e577b02/go.mod h1:UOO08UBb5mVisfwrjduINu5GF9+gmsn33f2tnr83xnE=
 github.com/bits-and-blooms/bitset v1.2.0 h1:Kn4yilvwNtMACtf1eYDlG8H77R07mZSPbMjLyS07ChA=
 github.com/bits-and-blooms/bitset v1.2.0/go.mod h1:gIdJ4wp64HaoK2YrL1Q5/N7Y16edYb8uY+O0FJTyyDA=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
diff --git a/main.go b/main.go
index 6c80b78..cbff141 100644
--- a/main.go
+++ b/main.go
@@ -84,6 +84,7 @@ func main() {
 	mkCacheDir(global.VoicePath, "语音")
 	mkCacheDir(global.VideoPath, "视频")
 	mkCacheDir(global.CachePath, "发送图片")
+	mkCacheDir(path.Join(global.ImagePath, "guild-images"), "频道图片缓存")
 	cache.Init()
 
 	db.Init()