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 861a2043..0bc7aa7c 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{}
diff --git a/coolq/event.go b/coolq/event.go
index 8d807a79..4454db17 100644
--- a/coolq/event.go
+++ b/coolq/event.go
@@ -396,7 +396,6 @@ func (bot *CQBot) friendAddedEvent(c *client.QQClient, e *client.NewFriendEvent)
 func (bot *CQBot) groupInvitedEvent(c *client.QQClient, e *client.GroupInvitedRequest) {
 	log.Infof("收到来自群 %v(%v) 内用户 %v(%v) 的加群邀请.", e.GroupName, e.GroupCode, e.InvitorNick, e.InvitorUin)
 	flag := strconv.FormatInt(e.RequestId, 10)
-	bot.invitedReqCache.Store(flag, e)
 	bot.dispatchEventMessage(MSG{
 		"post_type":    "request",
 		"request_type": "group",
@@ -413,7 +412,6 @@ func (bot *CQBot) groupInvitedEvent(c *client.QQClient, e *client.GroupInvitedRe
 func (bot *CQBot) groupJoinReqEvent(c *client.QQClient, e *client.UserJoinGroupRequest) {
 	log.Infof("群 %v(%v) 收到来自用户 %v(%v) 的加群请求.", e.GroupName, e.GroupCode, e.RequesterNick, e.RequesterUin)
 	flag := strconv.FormatInt(e.RequestId, 10)
-	bot.joinReqCache.Store(flag, e)
 	bot.dispatchEventMessage(MSG{
 		"post_type":    "request",
 		"request_type": "group",
diff --git a/docs/cqhttp.md b/docs/cqhttp.md
index c1f7a234..d3aba6bc 100644
--- a/docs/cqhttp.md
+++ b/docs/cqhttp.md
@@ -380,9 +380,9 @@ Type: `tts`
 | `filename` | string | 图片文件原名   |
 | `url`      | string | 图片下载地址   |
 
-### 获取群消息
+### 获取消息
 
-终结点: `/get_group_msg` 
+终结点: `/get_msg` 
 
 参数
 
@@ -398,7 +398,7 @@ Type: `tts`
 | `real_id`    | int32   | 消息真实id |
 | `sender`     | object  | 发送者     |
 | `time`       | int32   | 发送时间   |
-| `content`    | message | 消息内容   |
+| `message`    | message | 消息内容   |
 
 ### 获取合并转发内容
 
diff --git a/go.mod b/go.mod
index 72a329de..62929ae4 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,7 @@ module github.com/Mrs4s/go-cqhttp
 go 1.14
 
 require (
-	github.com/Mrs4s/MiraiGo v0.0.0-20201025234014-8ece3a9dd803
+	github.com/Mrs4s/MiraiGo v0.0.0-20201027102621-5fa25a7f7434
 	github.com/gin-gonic/gin v1.6.3
 	github.com/gorilla/websocket v1.4.2
 	github.com/guonaihong/gout v0.1.3
diff --git a/go.sum b/go.sum
index b9290fb0..0484ab1d 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/Mrs4s/MiraiGo v0.0.0-20201025234014-8ece3a9dd803 h1:tRXLslHbNt4bd2wV+MIU2sqQME6UJfMYolYufhSRdg0=
 github.com/Mrs4s/MiraiGo v0.0.0-20201025234014-8ece3a9dd803/go.mod h1:cwYPI2uq6nxNbx0nA6YuAKF1V5szSs6FPlGVLQvRUlo=
+github.com/Mrs4s/MiraiGo v0.0.0-20201027102621-5fa25a7f7434 h1:wb5EoWBj/ulZ30fBQA2KJ0IwVXcesu9aynCFdpRwS8M=
+github.com/Mrs4s/MiraiGo v0.0.0-20201027102621-5fa25a7f7434/go.mod h1:cwYPI2uq6nxNbx0nA6YuAKF1V5szSs6FPlGVLQvRUlo=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=