diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95ef7a8..371c753 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+## 2.0.0+4
+
+1.New dismiss group </br>
+2.New search local message </br>
+3.Upgrade client-sdk to 2.0.18
+
 ## 2.0.0+3
 
 1.Fix bug </br>
diff --git a/android/build.gradle b/android/build.gradle
index cd885cd..19670f1 100644
--- a/android/build.gradle
+++ b/android/build.gradle
@@ -41,5 +41,5 @@ android {
     }
 }
 dependencies {
-    implementation 'io.openim:client-sdk:2.0.15@aar'
+    implementation 'io.openim:client-sdk:2.0.18@aar'
 }
\ No newline at end of file
diff --git a/android/src/main/java/io/openim/flutter_openim_sdk/manager/FriendshipManager.java b/android/src/main/java/io/openim/flutter_openim_sdk/manager/FriendshipManager.java
index ecdef0b..f862e75 100644
--- a/android/src/main/java/io/openim/flutter_openim_sdk/manager/FriendshipManager.java
+++ b/android/src/main/java/io/openim/flutter_openim_sdk/manager/FriendshipManager.java
@@ -112,16 +112,4 @@ public class FriendshipManager extends BaseManager {
                 jsonValue(methodCall)
         );
     }
-
-//    public void forceSyncFriendApplication(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncFriendApplication();
-//    }
-//
-//    public void forceSyncFriend(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncFriend();
-//    }
-//
-//    public void forceSyncBlackList(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncBlackList();
-//    }
 }
diff --git a/android/src/main/java/io/openim/flutter_openim_sdk/manager/GroupManager.java b/android/src/main/java/io/openim/flutter_openim_sdk/manager/GroupManager.java
index 64e2e9b..30f443a 100644
--- a/android/src/main/java/io/openim/flutter_openim_sdk/manager/GroupManager.java
+++ b/android/src/main/java/io/openim/flutter_openim_sdk/manager/GroupManager.java
@@ -148,19 +148,12 @@ public class GroupManager extends BaseManager {
 
     }
 
-//    public void forceSyncApplyGroupRequest(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncApplyGroupRequest();
-//    }
-//
-//    public void forceSyncGroupRequest(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncGroupRequest();
-//    }
-//
-//    public void forceSyncJoinedGroup(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncJoinedGroup();
-//    }
-//
-//    public void forceSyncJoinedGroupMember(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncJoinedGroupMember();
-//    }
+    public void dismissGroup(MethodCall methodCall, MethodChannel.Result result) {
+        Open_im_sdk.dismissGroup(
+                new OnBaseListener(result),
+                value(methodCall, "operationID"),
+                value(methodCall, "gid")
+        );
+
+    }
 }
\ No newline at end of file
diff --git a/android/src/main/java/io/openim/flutter_openim_sdk/manager/IMManager.java b/android/src/main/java/io/openim/flutter_openim_sdk/manager/IMManager.java
index 1432d21..2571b5d 100644
--- a/android/src/main/java/io/openim/flutter_openim_sdk/manager/IMManager.java
+++ b/android/src/main/java/io/openim/flutter_openim_sdk/manager/IMManager.java
@@ -36,30 +36,4 @@ public class IMManager extends BaseManager {
     public void getLoginStatus(MethodCall methodCall, MethodChannel.Result result) {
         CommonUtil.runMainThreadReturn(result, Open_im_sdk.getLoginStatus());
     }
-
-//    public void getLoginUid(MethodCall methodCall, MethodChannel.Result result) {
-//        CommonUtil.runMainThreadReturn(result, Open_im_sdk.getLoginUid());
-//    }
-
-//    public void getUsersInfo(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.getUsersInfo(
-//                jsonValue(methodCall, "uidList"), new BaseListener(result));
-//    }
-
-//    public void setSelfInfo(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.setSelfInfo(
-//                jsonValue(methodCall), new BaseListener(result));
-//    }
-
-//    public void forceSyncLoginUerInfo(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncLoginUerInfo();
-//    }
-
-//    public void forceReConn(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceReConn();
-//    }
-
-//    public void setSdkLog(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.setSdkLog(value(methodCall, "sdkLog"));
-//    }
 }
diff --git a/android/src/main/java/io/openim/flutter_openim_sdk/manager/MessageManager.java b/android/src/main/java/io/openim/flutter_openim_sdk/manager/MessageManager.java
index 6cac74f..98ab341 100644
--- a/android/src/main/java/io/openim/flutter_openim_sdk/manager/MessageManager.java
+++ b/android/src/main/java/io/openim/flutter_openim_sdk/manager/MessageManager.java
@@ -143,10 +143,6 @@ public class MessageManager extends BaseManager {
         );
     }
 
-//    public void findMessages(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.findMessages(new OnBaseListener(result), jsonValue(methodCall, "messageIDList"));
-//    }
-
     public void markC2CMessageAsRead(MethodCall methodCall, MethodChannel.Result result) {
         Open_im_sdk.markC2CMessageAsRead(
                 new OnBaseListener(result),
@@ -311,9 +307,6 @@ public class MessageManager extends BaseManager {
                 value(methodCall, "data")
         ));
     }
-//    public void forceSyncMsg(MethodCall methodCall, MethodChannel.Result result) {
-//        Open_im_sdk.forceSyncMsg();
-//    }
 
     public void clearC2CHistoryMessage(MethodCall methodCall, MethodChannel.Result result) {
         Open_im_sdk.clearC2CHistoryMessage(
@@ -330,4 +323,12 @@ public class MessageManager extends BaseManager {
                 value(methodCall, "groupID")
         );
     }
+
+    public void searchLocalMessages(MethodCall methodCall, MethodChannel.Result result) {
+        Open_im_sdk.searchLocalMessages(
+                new OnBaseListener(result),
+                value(methodCall, "operationID"),
+                jsonValue(methodCall, "filter")
+        );
+    }
 }
diff --git a/example/pubspec.lock b/example/pubspec.lock
index 0443ebd..20e2a20 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -68,7 +68,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.0.0+2"
+    version: "2.0.0+3"
   flutter_test:
     dependency: "direct dev"
     description: flutter
diff --git a/ios/Classes/Module/GroupManager.swift b/ios/Classes/Module/GroupManager.swift
index 8b6c71f..132e633 100644
--- a/ios/Classes/Module/GroupManager.swift
+++ b/ios/Classes/Module/GroupManager.swift
@@ -21,10 +21,7 @@ public class GroupManager: BaseServiceManager {
         self["getSendGroupApplicationList"] = getSendGroupApplicationList
         self["acceptGroupApplication"] = acceptGroupApplication
         self["refuseGroupApplication"] = refuseGroupApplication
-//        self["forceSyncApplyGroupRequest"] = forceSyncApplyGroupRequest
-//        self["forceSyncGroupRequest"] = forceSyncGroupRequest
-//        self["forceSyncJoinedGroup"] = forceSyncJoinedGroup
-//        self["forceSyncJoinedGroupMember"] = forceSyncJoinedGroupMember
+        self["dismissGroup"] = dismissGroup
     }
 
     func setGroupListener(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
@@ -95,27 +92,11 @@ public class GroupManager: BaseServiceManager {
         Open_im_sdkRefuseGroupApplication(BaseCallback(result: result), methodCall[string: "operationID"], methodCall[string: "gid"], methodCall[string: "uid"], methodCall[string: "handleMsg"])
     }
     
-//     func forceSyncApplyGroupRequest(methodCall: FlutterMethodCall, result: @escaping FlutterResult) {
-//         Open_im_sdkForceSyncApplyGroupRequest()
-//         callBack(result)
-//     }
-//
-//     func forceSyncGroupRequest(methodCall: FlutterMethodCall, result: @escaping FlutterResult) {
-//         Open_im_sdkForceSyncGroupRequest()
-//         callBack(result)
-//     }
-//
-//     func forceSyncJoinedGroup(methodCall: FlutterMethodCall, result: @escaping FlutterResult) {
-//         Open_im_sdkForceSyncJoinedGroup()
-//         callBack(result)
-//     }
-//
-//     func forceSyncJoinedGroupMember(methodCall: FlutterMethodCall, result: @escaping FlutterResult) {
-//         Open_im_sdkForceSyncJoinedGroupMember()
-//         callBack(result)
-//     }
-
+    func dismissGroup(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
+        Open_im_sdkDismissGroup(BaseCallback(result: result), methodCall[string: "operationID"], methodCall[string: "gid"])
+    }
 }
+
 public class GroupListener: NSObject, Open_im_sdk_callbackOnGroupListenerProtocol {
     
     private let channel:FlutterMethodChannel
diff --git a/ios/Classes/Module/MessageManager.swift b/ios/Classes/Module/MessageManager.swift
index 9743441..0a0f894 100644
--- a/ios/Classes/Module/MessageManager.swift
+++ b/ios/Classes/Module/MessageManager.swift
@@ -15,7 +15,6 @@ public class MessageManager: BaseServiceManager {
         self["deleteMessages"] = deleteMessages
         self["insertSingleMessageToLocalStorage"] = insertSingleMessageToLocalStorage
         self["insertGroupMessageToLocalStorage"] = insertGroupMessageToLocalStorage
-        // self["findMessages"] = findMessages
         self["markC2CMessageAsRead"] = markC2CMessageAsRead
         self["markGroupMessageAsRead"] = markGroupMessageAsRead
         self["typingStatusUpdate"] = typingStatusUpdate
@@ -36,9 +35,9 @@ public class MessageManager: BaseServiceManager {
         self["createQuoteMessage"] = createQuoteMessage
         self["createCardMessage"] = createCardMessage
         self["createFaceMessage"] = createFaceMessage
-        // self["forceSyncMsg"] = forceSyncMsg
         self["clearC2CHistoryMessage"] = clearC2CHistoryMessage
         self["clearGroupHistoryMessage"] = clearGroupHistoryMessage
+        self["searchLocalMessages"] = searchLocalMessages
     }
     
     func setAdvancedMsgListener(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
@@ -80,10 +79,6 @@ public class MessageManager: BaseServiceManager {
                                                      methodCall[string: "groupID"], methodCall[string: "senderID"])
     }
     
-    // func findMessages(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
-    //     Open_im_sdkFindMessages(BaseCallback(result: result), methodCall[jsonString: "messageIDList"])
-    // }
-    
     func markC2CMessageAsRead(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
         Open_im_sdkMarkC2CMessageAsRead(BaseCallback(result: result), methodCall[string: "operationID"], methodCall[string: "userID"], methodCall[jsonString: "messageIDList"])
     }
@@ -174,10 +169,6 @@ public class MessageManager: BaseServiceManager {
     func createFaceMessage(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
         callBack(result, Open_im_sdkCreateFaceMessage(methodCall[string: "operationID"], methodCall[int: "index"], methodCall[string: "data"]))
     }
-    // func forceSyncMsg(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
-    //     Open_im_sdkForceSyncMsg()
-    //     callBack(result)
-    // }
     
     func clearC2CHistoryMessage(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
         Open_im_sdkClearC2CHistoryMessage(BaseCallback(result: result), methodCall[string: "operationID"], methodCall[string: "userID"])
@@ -187,6 +178,10 @@ public class MessageManager: BaseServiceManager {
         Open_im_sdkClearGroupHistoryMessage(BaseCallback(result: result), methodCall[string: "operationID"], methodCall[string: "groupID"])
     }
     
+    func searchLocalMessages(methodCall: FlutterMethodCall, result: @escaping FlutterResult){
+        Open_im_sdkSearchLocalMessages(BaseCallback(result: result), methodCall[string: "operationID"], methodCall[jsonString: "filter"])
+    }
+    
     public class SendMsgProgressListener: NSObject, Open_im_sdk_callbackSendMsgCallBackProtocol {
         private let channel: FlutterMethodChannel
         private let result: FlutterResult
diff --git a/ios/Framework/OpenIMCore.framework/Headers/Open_im_sdk.objc.h b/ios/Framework/OpenIMCore.framework/Headers/Open_im_sdk.objc.h
index bd04403..851dc0b 100644
--- a/ios/Framework/OpenIMCore.framework/Headers/Open_im_sdk.objc.h
+++ b/ios/Framework/OpenIMCore.framework/Headers/Open_im_sdk.objc.h
@@ -84,12 +84,16 @@ FOUNDATION_EXPORT NSString* _Nonnull Open_im_sdkCreateVideoMessageFromFullPath(N
 
 FOUNDATION_EXPORT void Open_im_sdkDeleteConversation(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable conversationID);
 
+FOUNDATION_EXPORT void Open_im_sdkDeleteConversationMsgFromLocalAndSvr(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable conversationID);
+
 FOUNDATION_EXPORT void Open_im_sdkDeleteFriend(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable friendUserID);
 
-FOUNDATION_EXPORT void Open_im_sdkDeleteMessage(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable message);
+FOUNDATION_EXPORT void Open_im_sdkDeleteMessageFromLocalAndSvr(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable message);
 
 FOUNDATION_EXPORT void Open_im_sdkDeleteMessageFromLocalStorage(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable message);
 
+FOUNDATION_EXPORT void Open_im_sdkDismissGroup(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID, NSString* _Nullable groupID);
+
 FOUNDATION_EXPORT void Open_im_sdkGetAllConversationList(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID);
 
 FOUNDATION_EXPORT void Open_im_sdkGetBlackList(id<Open_im_sdk_callbackBase> _Nullable callback, NSString* _Nullable operationID);
diff --git a/ios/Framework/OpenIMCore.framework/OpenIMCore b/ios/Framework/OpenIMCore.framework/OpenIMCore
index 598e2d5..c3f578d 100644
Binary files a/ios/Framework/OpenIMCore.framework/OpenIMCore and b/ios/Framework/OpenIMCore.framework/OpenIMCore differ
diff --git a/lib/src/manager/im_group_manager.dart b/lib/src/manager/im_group_manager.dart
index 4c12a47..25e68b9 100644
--- a/lib/src/manager/im_group_manager.dart
+++ b/lib/src/manager/im_group_manager.dart
@@ -320,6 +320,19 @@ class GroupManager {
             'operationID': Utils.checkOperationID(operationID),
           }));
 
+  /// Dissmiss group
+  /// 解散群
+  Future<dynamic> dismissGroup({
+    required String groupID,
+    String? operationID,
+  }) =>
+      _channel.invokeMethod(
+          'dismissGroup',
+          _buildParam({
+            'gid': 'groupID',
+            'operationID': Utils.checkOperationID(operationID),
+          }));
+
   static Map _buildParam(Map param) {
     param["ManagerName"] = "groupManager";
     return param;
diff --git a/lib/src/manager/im_message_manager.dart b/lib/src/manager/im_message_manager.dart
index 37eed17..5f125bb 100644
--- a/lib/src/manager/im_message_manager.dart
+++ b/lib/src/manager/im_message_manager.dart
@@ -520,6 +520,39 @@ class MessageManager {
             "operationID": Utils.checkOperationID(operationID),
           }));
 
+  /// Search local message
+  /// 搜索消息
+  Future<dynamic> searchLocalMessages({
+    required String sourceID,
+    required String sessionType,
+    List<String> keywordList = const [],
+    int keywordListMatchType = 0,
+    List<String> senderUserIDList = const [],
+    List<String> messageTypeList = const [],
+    int searchTimePosition = 0,
+    int searchTimePeriod = 0,
+    int pageIndex = 1,
+    int count = 40,
+    String? operationID,
+  }) =>
+      _channel.invokeMethod(
+          'searchLocalMessages',
+          _buildParam({
+            'filter': {
+              'sourceID': sourceID,
+              'sessionType': sessionType,
+              'keywordList': keywordList,
+              'keywordListMatchType': keywordListMatchType,
+              'senderUserIDList': senderUserIDList,
+              'messageTypeList': messageTypeList,
+              'searchTimePosition': searchTimePosition,
+              'searchTimePeriod': searchTimePeriod,
+              'pageIndex': pageIndex,
+              'count': count,
+            },
+            'operationID': Utils.checkOperationID(operationID),
+          }));
+
   static Map _buildParam(Map param) {
     param["ManagerName"] = "messageManager";
     return param;
diff --git a/pubspec.yaml b/pubspec.yaml
index 848bd96..9ffc1bd 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -1,6 +1,6 @@
 name: flutter_openim_sdk
 description: An instant messaging plug-in that supports Android and IOS. And the server is also all open source.
-version: 2.0.0+3
+version: 2.0.0+4
 homepage: https://www.rentsoft.cn
 repository: https://github.com/OpenIMSDK/Open-IM-SDK-Flutter