diff --git a/coolq/api.go b/coolq/api.go
index 36564d74..fc05c7ff 100644
--- a/coolq/api.go
+++ b/coolq/api.go
@@ -384,29 +384,43 @@ func (bot *CQBot) CQProcessFriendRequest(flag string, approve bool) MSG {
 
 // https://cqhttp.cc/docs/4.15/#/API?id=set_group_add_request-%E5%A4%84%E7%90%86%E5%8A%A0%E7%BE%A4%E8%AF%B7%E6%B1%82%EF%BC%8F%E9%82%80%E8%AF%B7
 func (bot *CQBot) CQProcessGroupRequest(flag, subType, reason string, approve bool) MSG {
+	msgs, err := bot.Client.GetGroupSystemMessages()
+	if err != nil {
+		log.Errorf("获取群系统消息失败: %v", err)
+		return Failed(100)
+	}
 	if subType == "add" {
-		req, ok := bot.joinReqCache.Load(flag)
-		if !ok {
-			return Failed(100)
+		for _, req := range msgs.JoinRequests {
+			if strconv.FormatInt(req.RequestId, 10) == flag {
+				if req.Checked {
+					log.Errorf("处理群系统消息失败: 无法操作已处理的消息.")
+					return Failed(100)
+				}
+				if approve {
+					req.Accept()
+				} else {
+					req.Reject(false, reason)
+				}
+				return OK(nil)
+			}
 		}
-		bot.joinReqCache.Delete(flag)
-		if approve {
-			req.(*client.UserJoinGroupRequest).Accept()
-		} else {
-			req.(*client.UserJoinGroupRequest).Reject(false, reason)
+	} else {
+		for _, req := range msgs.InvitedRequests {
+			if strconv.FormatInt(req.RequestId, 10) == flag {
+				if req.Checked {
+					log.Errorf("处理群系统消息失败: 无法操作已处理的消息.")
+					return Failed(100)
+				}
+				if approve {
+					req.Accept()
+				} else {
+					req.Reject(false, reason)
+				}
+				return OK(nil)
+			}
 		}
-		return OK(nil)
-	}
-	req, ok := bot.invitedReqCache.Load(flag)
-	if ok {
-		bot.invitedReqCache.Delete(flag)
-		if approve {
-			req.(*client.GroupInvitedRequest).Accept()
-		} else {
-			req.(*client.GroupInvitedRequest).Reject(false, reason)
-		}
-		return OK(nil)
 	}
+	log.Errorf("处理群系统消息失败: 消息 %v 不存在.", flag)
 	return Failed(100)
 }
 
diff --git a/coolq/bot.go b/coolq/bot.go
index b71163de..dbe71b4f 100644
--- a/coolq/bot.go
+++ b/coolq/bot.go
@@ -23,13 +23,11 @@ import (
 type CQBot struct {
 	Client *client.QQClient
 
-	events          []func(MSG)
-	db              *leveldb.DB
-	friendReqCache  sync.Map
-	invitedReqCache sync.Map
-	joinReqCache    sync.Map
-	tempMsgCache    sync.Map
-	oneWayMsgCache  sync.Map
+	events         []func(MSG)
+	db             *leveldb.DB
+	friendReqCache sync.Map
+	tempMsgCache   sync.Map
+	oneWayMsgCache sync.Map
 }
 
 type MSG map[string]interface{}