diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1e1f160..02c6b26 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -23,4 +23,6 @@
  ### 1.1.1
  * Update online cmd messages
  ### 1.1.2
- * Optimize connections
\ No newline at end of file
+ * Optimize connections
+ ### 1.1.3
+ * Add some methods
\ No newline at end of file
diff --git a/README.md b/README.md
index a9964de..f432e34 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
 #### 安装
 ```
 dependencies:
-  wukongimfluttersdk: ^1.1.2
+  wukongimfluttersdk: ^1.1.3
 ```
 #### 引入
 ```dart
diff --git a/example/lib/http.dart b/example/lib/http.dart
index 58d3229..05e5d2d 100644
--- a/example/lib/http.dart
+++ b/example/lib/http.dart
@@ -40,6 +40,7 @@ class HttpUtils {
           lastSsgSeqs, //   客户端所有频道会话的最后一条消息序列号拼接出来的同步串 格式： channelID:channelType:last_msg_seq|channelID:channelType:last_msg_seq  （此字段非必填，如果不填就获取全量数据，填写了获取增量数据，看你自己的需求。）
       "msg_count": 10 // 每个会话获取最大的消息数量，一般为app点进去第一屏的数据
     });
+    print(response.data);
     WKSyncConversation conversation = WKSyncConversation();
     conversation.conversations = [];
     if (response.statusCode == HttpStatus.ok) {
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 46002a9..ce49fab 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -499,7 +499,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "1.1.2"
+    version: "1.1.3"
   x25519:
     dependency: transitive
     description:
diff --git a/lib/db/conversation.dart b/lib/db/conversation.dart
index ed54cf0..ba3ee3d 100644
--- a/lib/db/conversation.dart
+++ b/lib/db/conversation.dart
@@ -141,20 +141,18 @@ class ConversationDB {
     List<Map<String, dynamic>> updateList = [];
 
     for (WKConversationMsg msg in list) {
+      bool isAdd = true;
       if (existList.isNotEmpty) {
         for (var i = 0; i < existList.length; i++) {
-          bool isAdd = true;
           if (existList[i].channelID == msg.channelID &&
               existList[i].channelType == msg.channelType) {
             updateList.add(getMap(msg, true));
             isAdd = false;
             break;
           }
-          if (isAdd) {
-            insertList.add(getMap(msg, true));
-          }
         }
-      } else {
+      }
+      if (isAdd) {
         insertList.add(getMap(msg, true));
       }
     }
@@ -176,6 +174,31 @@ class ConversationDB {
     }
   }
 
+  clearAll() {
+    WKDBHelper.shared.getDB().delete(WKDBConst.tableConversation);
+  }
+
+  Future<int> queryExtraMaxVersion() async {
+    int maxVersion = 0;
+    String sql =
+        "select max(version) version from ${WKDBConst.tableConversationExtra}";
+
+    List<Map<String, Object?>> list =
+        await WKDBHelper.shared.getDB().rawQuery(sql);
+    if (list.isNotEmpty) {
+      dynamic data = list[0];
+      maxVersion = WKDBConst.readInt(data, 'version');
+    }
+    return maxVersion;
+  }
+
+  Future<int> updateWithField(
+      dynamic map, String channelID, int channelType) async {
+    return await WKDBHelper.shared.getDB().update(
+        WKDBConst.tableConversation, map,
+        where: "channel_id=$channelID and channel_type=$channelType");
+  }
+
   WKUIConversationMsg getUIMsg(WKConversationMsg conversationMsg) {
     WKUIConversationMsg msg = WKUIConversationMsg();
     msg.lastMsgSeq = conversationMsg.lastMsgSeq;
diff --git a/lib/db/message.dart b/lib/db/message.dart
index e98888d..fdb264c 100644
--- a/lib/db/message.dart
+++ b/lib/db/message.dart
@@ -11,10 +11,10 @@ import '../entity/channel_member.dart';
 import 'channel_member.dart';
 import 'wk_db_helper.dart';
 
-class MessaggeDB {
-  MessaggeDB._privateConstructor();
-  static final MessaggeDB _instance = MessaggeDB._privateConstructor();
-  static MessaggeDB get shared => _instance;
+class MessageDB {
+  MessageDB._privateConstructor();
+  static final MessageDB _instance = MessageDB._privateConstructor();
+  static MessageDB get shared => _instance;
   final String extraCols =
       "IFNULL(${WKDBConst.tableMessageExtra}.readed,0) as readed,IFNULL(${WKDBConst.tableMessageExtra}.readed_count,0) as readed_count,IFNULL(${WKDBConst.tableMessageExtra}.unread_count,0) as unread_count,IFNULL(${WKDBConst.tableMessageExtra}.revoke,0) as revoke,IFNULL(${WKDBConst.tableMessageExtra}.revoker,'') as revoker,IFNULL(${WKDBConst.tableMessageExtra}.extra_version,0) as extra_version,IFNULL(${WKDBConst.tableMessageExtra}.is_mutual_deleted,0) as is_mutual_deleted,IFNULL(${WKDBConst.tableMessageExtra}.need_upload,0) as need_upload,IFNULL(${WKDBConst.tableMessageExtra}.content_edit,'') as content_edit,IFNULL(${WKDBConst.tableMessageExtra}.edited_at,0) as edited_at";
   final String messageCols =
@@ -714,6 +714,25 @@ class MessaggeDB {
         .update(WKDBConst.tableMessage, map, where: 'status=0');
   }
 
+  Future<WKMsg?> queryMaxOrderSeqMsgWithChannel(
+      String channelID, int channelType) async {
+    WKMsg? wkMsg;
+    String sql =
+        "select * from ${WKDBConst.tableMessage} where channel_id='$channelID' and channel_type=$channelType and is_deleted=0 and type<>0 and type<>99 order by order_seq desc limit 1";
+    List<Map<String, Object?>> list =
+        await WKDBHelper.shared.getDB().rawQuery(sql);
+    if (list.isNotEmpty) {
+      dynamic data = list[0];
+      if (data != null) {
+        wkMsg = WKDBConst.serializeWKMsg(data);
+      }
+    }
+    if (wkMsg != null) {
+      wkMsg.reactionList = await queryReactions(wkMsg.messageID);
+    }
+    return wkMsg;
+  }
+
   dynamic getMap(WKMsg msg) {
     var map = <String, Object>{};
     map['message_id'] = msg.messageID;
diff --git a/lib/manager/conversation_manager.dart b/lib/manager/conversation_manager.dart
index 5bd380c..5ab30ee 100644
--- a/lib/manager/conversation_manager.dart
+++ b/lib/manager/conversation_manager.dart
@@ -55,6 +55,43 @@ class WKConversationManager {
     return uiMsg;
   }
 
+  Future<int> getExtraMaxVersion() async {
+    return ConversationDB.shared.queryExtraMaxVersion();
+  }
+
+  Future<WKUIConversationMsg?> getWithChannel(
+      String channelID, int channelType) async {
+    var msg = await ConversationDB.shared
+        .queryMsgByMsgChannelId(channelID, channelType);
+    if (msg != null) {
+      return ConversationDB.shared.getUIMsg(msg);
+    }
+    return null;
+  }
+
+  clearAll() {
+    ConversationDB.shared.clearAll();
+  }
+
+  updateRedDot(String channelID, int channelType, int redDot) async {
+    var map = <String, Object>{};
+    map['unread_count'] = redDot;
+    var result = await ConversationDB.shared
+        .updateWithField(map, channelID, channelType);
+    if (result > 0) {
+      _refreshMsg(channelID, channelType);
+    }
+  }
+
+  _refreshMsg(String channelID, int channelType) async {
+    var msg = await ConversationDB.shared
+        .queryMsgByMsgChannelId(channelID, channelType);
+    if (msg != null) {
+      var uiMsg = ConversationDB.shared.getUIMsg(msg);
+      setRefreshMsg(uiMsg, true);
+    }
+  }
+
   addOnDeleteMsgListener(String key, Function(String, int) back) {
     _deleteMsgMap ??= HashMap();
     _deleteMsgMap![key] = back;
@@ -174,17 +211,17 @@ class WKConversationManager {
       }
     }
     if (msgExtraList.isNotEmpty) {
-      MessaggeDB.shared.insertOrUpdateMsgExtras(msgExtraList);
+      MessageDB.shared.insertOrUpdateMsgExtras(msgExtraList);
     }
 
     if (msgList.isNotEmpty) {
-      MessaggeDB.shared.insertMsgList(msgList);
+      MessageDB.shared.insertMsgList(msgList);
     }
     if (conversationMsgList.isNotEmpty) {
       ConversationDB.shared.insertMsgList(conversationMsgList);
     }
     if (msgReactionList.isNotEmpty) {
-      MessaggeDB.shared.insertOrUpdateReactionList(msgReactionList);
+      MessageDB.shared.insertOrUpdateReactionList(msgReactionList);
     }
     if (msgList.isNotEmpty && msgList.length < 20) {
       msgList.sort((a, b) => a.messageSeq.compareTo(b.messageSeq));
diff --git a/lib/manager/message_manager.dart b/lib/manager/message_manager.dart
index 1c16472..d2d44f1 100644
--- a/lib/manager/message_manager.dart
+++ b/lib/manager/message_manager.dart
@@ -4,6 +4,7 @@ import 'dart:convert';
 import 'package:uuid/uuid.dart';
 import 'package:wukongimfluttersdk/common/logs.dart';
 import 'package:wukongimfluttersdk/db/const.dart';
+import 'package:wukongimfluttersdk/db/conversation.dart';
 import 'package:wukongimfluttersdk/db/message.dart';
 import 'package:wukongimfluttersdk/entity/msg.dart';
 import 'package:wukongimfluttersdk/model/wk_media_message_content.dart';
@@ -29,6 +30,8 @@ class WKMessageManager {
   Function(WKMsg liMMsg)? _msgInsertedBack;
   HashMap<String, Function(List<WKMsg>)>? _newMsgBack;
   HashMap<String, Function(WKMsg)>? _refreshMsgBack;
+  HashMap<String, Function(String)>? _deleteMsgBack;
+
   Function(
       String channelID,
       int channelType,
@@ -86,11 +89,11 @@ class WKMessageManager {
   }
 
   Future<WKMsg?> getWithClientMsgNo(String clientMsgNo) {
-    return MessaggeDB.shared.queryWithClientMsgNo(clientMsgNo);
+    return MessageDB.shared.queryWithClientMsgNo(clientMsgNo);
   }
 
   Future<int> saveMsg(WKMsg msg) async {
-    return await MessaggeDB.shared.insert(msg);
+    return await MessageDB.shared.insert(msg);
   }
 
   String generateClientMsgNo() {
@@ -101,7 +104,7 @@ class WKMessageManager {
       int messageSeq, String channelID, int channelType) async {
     if (messageSeq == 0) {
       int tempOrderSeq =
-          await MessaggeDB.shared.queryMaxOrderSeq(channelID, channelType);
+          await MessageDB.shared.queryMaxOrderSeq(channelID, channelType);
       return tempOrderSeq + 1;
     }
     return messageSeq * wkOrderSeqFactor;
@@ -111,23 +114,22 @@ class WKMessageManager {
     dynamic json = <String, Object>{};
     json['viewed'] = 1;
     json['viewed_at'] = viewedAt;
-    return MessaggeDB.shared
-        .updateMsgWithFieldAndClientMsgNo(json, clientMsgNO);
+    return MessageDB.shared.updateMsgWithFieldAndClientMsgNo(json, clientMsgNO);
   }
 
   Future<int> getMaxExtraVersionWithChannel(
       String channelID, int channelType) async {
-    return MessaggeDB.shared
+    return MessageDB.shared
         .queryMaxExtraVersionWithChannel(channelID, channelType);
   }
 
   saveRemoteExtraMsg(List<WKMsgExtra> list) async {
-    MessaggeDB.shared.insertOrUpdateMsgExtras(list);
+    MessageDB.shared.insertOrUpdateMsgExtras(list);
     List<String> msgIds = [];
     for (var extra in list) {
       msgIds.add(extra.messageID);
     }
-    var msgList = await MessaggeDB.shared.queryWithMessageIds(msgIds);
+    var msgList = await MessageDB.shared.queryWithMessageIds(msgIds);
     for (var msg in msgList) {
       for (var extra in list) {
         msg.wkMsgExtra ??= WKMsgExtra();
@@ -187,10 +189,10 @@ class WKMessageManager {
       }
     }
     if (msgExtraList.isNotEmpty) {
-      MessaggeDB.shared.insertOrUpdateMsgExtras(msgExtraList);
+      MessageDB.shared.insertOrUpdateMsgExtras(msgExtraList);
     }
     if (msgList.isNotEmpty) {
-      MessaggeDB.shared.insertMsgList(msgList);
+      MessageDB.shared.insertMsgList(msgList);
     }
   }
 
@@ -250,7 +252,7 @@ class WKMessageManager {
         contain = true;
         pullMode = 0;
       } else {
-        int minOrderSeq = await MessaggeDB.shared
+        int minOrderSeq = await MessageDB.shared
             .getOrderSeq(channelId, channelType, aroundMsgOrderSeq, 3);
         if (minOrderSeq == 0) {
           oldestOrderSeq = aroundMsgOrderSeq;
@@ -265,7 +267,7 @@ class WKMessageManager {
             }
           } else {
             // todo 这里只会查询3条数据  oldestOrderSeq = minOrderSeq
-            int startOrderSeq = await MessaggeDB.shared
+            int startOrderSeq = await MessageDB.shared
                 .getOrderSeq(channelId, channelType, aroundMsgOrderSeq, limit);
             if (startOrderSeq == 0) {
               oldestOrderSeq = aroundMsgOrderSeq;
@@ -278,7 +280,7 @@ class WKMessageManager {
         contain = true;
       }
     }
-    MessaggeDB.shared.getOrSyncHistoryMessages(
+    MessageDB.shared.getOrSyncHistoryMessages(
         channelId,
         channelType,
         oldestOrderSeq,
@@ -297,7 +299,7 @@ class WKMessageManager {
   }
 
   Future<int> getMaxMessageSeq(String channelID, int channelType) {
-    return MessaggeDB.shared.getMaxMessageSeq(channelID, channelType);
+    return MessageDB.shared.getMaxMessageSeq(channelID, channelType);
   }
 
   pushNewMsg(List<WKMsg> list) {
@@ -321,6 +323,27 @@ class WKMessageManager {
     }
   }
 
+  addOnDeleteMsgListener(String key, Function(String) back) {
+    _deleteMsgBack ??= HashMap();
+    if (key != '') {
+      _deleteMsgBack![key] = back;
+    }
+  }
+
+  removeDeleteMsgListener(String key) {
+    if (_deleteMsgBack != null) {
+      _deleteMsgBack!.remove(key);
+    }
+  }
+
+  _setDeleteMsg(String clientMsgNo) {
+    if (_deleteMsgBack != null) {
+      _deleteMsgBack!.forEach((key, back) {
+        back(clientMsgNo);
+      });
+    }
+  }
+
   addOnRefreshMsgListener(String key, Function(WKMsg) back) {
     _refreshMsgBack ??= HashMap();
     if (key != '') {
@@ -393,7 +416,7 @@ class WKMessageManager {
     wkMsg.channelType = channel.channelType;
     wkMsg.fromUID = WKIM.shared.options.uid!;
     wkMsg.contentType = messageContent.contentType;
-    int tempOrderSeq = await MessaggeDB.shared
+    int tempOrderSeq = await MessageDB.shared
         .queryMaxOrderSeq(wkMsg.channelID, wkMsg.channelType);
     wkMsg.orderSeq = tempOrderSeq + 1;
     dynamic json = wkMsg.messageContent!.encodeJson();
@@ -445,7 +468,7 @@ class WKMessageManager {
 
   updateSendResult(
       String messageID, int clientSeq, int messageSeq, int reasonCode) async {
-    WKMsg? wkMsg = await MessaggeDB.shared.queryWithClientSeq(clientSeq);
+    WKMsg? wkMsg = await MessageDB.shared.queryWithClientSeq(clientSeq);
     if (wkMsg != null) {
       wkMsg.messageID = messageID;
       wkMsg.messageSeq = messageSeq;
@@ -457,7 +480,7 @@ class WKMessageManager {
       int orderSeq = await WKIM.shared.messageManager
           .getMessageOrderSeq(messageSeq, wkMsg.channelID, wkMsg.channelType);
       map['order_seq'] = orderSeq;
-      MessaggeDB.shared.updateMsgWithField(map, clientSeq);
+      MessageDB.shared.updateMsgWithField(map, clientSeq);
       setRefreshMsg(wkMsg);
     }
   }
@@ -465,9 +488,9 @@ class WKMessageManager {
   updateMsgStatusFail(int clientMsgSeq) async {
     var map = <String, Object>{};
     map['status'] = WKSendMsgResult.sendFail;
-    int row = await MessaggeDB.shared.updateMsgWithField(map, clientMsgSeq);
+    int row = await MessageDB.shared.updateMsgWithField(map, clientMsgSeq);
     if (row > 0) {
-      MessaggeDB.shared.queryWithClientSeq(clientMsgSeq).then((wkMsg) {
+      MessageDB.shared.queryWithClientSeq(clientMsgSeq).then((wkMsg) {
         if (wkMsg != null) {
           setRefreshMsg(wkMsg);
         }
@@ -477,14 +500,14 @@ class WKMessageManager {
 
   updateContent(String clientMsgNO, WKMessageContent messageContent,
       bool isRefreshUI) async {
-    WKMsg? wkMsg = await MessaggeDB.shared.queryWithClientMsgNo(clientMsgNO);
+    WKMsg? wkMsg = await MessageDB.shared.queryWithClientMsgNo(clientMsgNO);
     if (wkMsg != null) {
       var map = <String, Object>{};
       dynamic json = messageContent.encodeJson();
       json['type'] = wkMsg.contentType;
 
       map['content'] = jsonEncode(json);
-      int result = await MessaggeDB.shared
+      int result = await MessageDB.shared
           .updateMsgWithFieldAndClientMsgNo(map, clientMsgNO);
       if (isRefreshUI && result > 0) {
         setRefreshMsg(wkMsg);
@@ -493,6 +516,33 @@ class WKMessageManager {
   }
 
   updateSendingMsgFail() {
-    MessaggeDB.shared.updateSendingMsgFail();
+    MessageDB.shared.updateSendingMsgFail();
+  }
+
+  deleteWithClientMsgNo(String clientMsgNo) async {
+    var map = <String, Object>{};
+    map['is_deleted'] = 1;
+
+    var result = await MessageDB.shared
+        .updateMsgWithFieldAndClientMsgNo(map, clientMsgNo);
+    if (result > 0) {
+      _setDeleteMsg(clientMsgNo);
+      var wkMsg = await getWithClientMsgNo(clientMsgNo);
+      if (wkMsg != null) {
+        var coverMsg = await ConversationDB.shared
+            .queryMsgByMsgChannelId(wkMsg.channelID, wkMsg.channelType);
+        if (coverMsg != null && coverMsg.lastClientMsgNO == clientMsgNo) {
+          var tempMsg = await MessageDB.shared.queryMaxOrderSeqMsgWithChannel(
+              wkMsg.channelID, wkMsg.channelType);
+          if (tempMsg != null) {
+            var uiMsg =
+                await WKIM.shared.conversationManager.saveWithLiMMsg(tempMsg);
+            if (uiMsg != null) {
+              WKIM.shared.conversationManager.setRefreshMsg(uiMsg, true);
+            }
+          }
+        }
+      }
+    }
   }
 }
diff --git a/pubspec.yaml b/pubspec.yaml
index 40ffbf4..7b643bd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -15,7 +15,7 @@ description: wukong IM flutter sdk
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.1.2
+version: 1.1.3
 homepage: https://github.com/WuKongIM/WuKongIMFlutterSDK
 
 environment: