diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7e1d6df..103d276 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,9 @@
 - Add onRecvMessageExtensionsAdded method for OnAdvancedMsgListener
 - Add addMessageReactionExtensions method for MessageManager
 - Add getMessageListSomeReactionExtensions method for MessageManager
+- Add isExternal field for MessageManager
+- Add isReact method field MessageManager
+- Add params isExternalExtensions for initSDK
 
 ## 2.3.5+1
 
diff --git a/lib/src/manager/im_manager.dart b/lib/src/manager/im_manager.dart
index 61d5fa1..59413b3 100644
--- a/lib/src/manager/im_manager.dart
+++ b/lib/src/manager/im_manager.dart
@@ -382,6 +382,7 @@ class IMManager {
     String? encryptionKey,
     bool enabledEncryption = false,
     bool enabledCompression = false,
+    bool isExternalExtensions = false,
     String? operationID,
   }) {
     this._connectListener = listener;
@@ -399,6 +400,7 @@ class IMManager {
             "encryption_key": encryptionKey,
             "is_need_encryption": enabledEncryption,
             "is_compression ": enabledCompression,
+            "is_external_extensions": isExternalExtensions,
             "operationID": Utils.checkOperationID(operationID),
           },
         ));
diff --git a/lib/src/models/message.dart b/lib/src/models/message.dart
index 123ef7a..a110b76 100644
--- a/lib/src/models/message.dart
+++ b/lib/src/models/message.dart
@@ -105,6 +105,10 @@ class Message {
   /// 附加信息
   AttachedInfoElem? attachedInfoElem;
 
+  bool? isReact;
+
+  bool? isExternal;
+
   Message({
     this.clientMsgID,
     this.serverMsgID,
@@ -140,6 +144,8 @@ class Message {
     this.notificationElem,
     this.faceElem,
     this.attachedInfoElem,
+    this.isExternal,
+    this.isReact,
   });
 
   Message.fromJson(Map<String, dynamic> json) {
@@ -200,6 +206,8 @@ class Message {
         ? AttachedInfoElem.fromJson(json['attachedInfoElem'])
         : null;
     hasReadTime = json['hasReadTime'] ?? attachedInfoElem?.hasReadTime;
+    isExternal = json['isExternal'];
+    isReact = json['isReact'];
   }
 
   Map<String, dynamic> toJson() {
@@ -238,6 +246,8 @@ class Message {
     data['notificationElem'] = this.notificationElem?.toJson();
     data['faceElem'] = this.faceElem?.toJson();
     data['attachedInfoElem'] = this.attachedInfoElem?.toJson();
+    data['isExternal'] = this.isExternal;
+    data['isReact'] = this.isReact;
     return data;
   }