diff --git a/lib/mop.dart b/lib/mop.dart
index 0b30f08..30fbd31 100644
--- a/lib/mop.dart
+++ b/lib/mop.dart
@@ -9,6 +9,19 @@ typedef MopEventErrorCallback = void Function(dynamic event);
 
 typedef ExtensionApiHandler = Future Function(dynamic params);
 
+class ServerConfig {
+  String appkey;
+  String secret;
+  String apiServer;
+  String apiPrefix;
+  String cryptType;
+
+  ServerConfig(this.appkey, this.secret, this.apiServer, this.apiPrefix, this.cryptType);
+
+  Map<String, dynamic> toJson() =>
+      {'appkey': appkey, 'secret': secret, 'apiServer': apiServer, 'apiPrefix': apiPrefix, 'cryptType':cryptType};
+}
+
 class Mop {
   static final Mop _instance = new Mop._internal();
   MethodChannel _channel;
@@ -74,7 +87,8 @@ class Mop {
       String apiPrefix,
       String cryptType,
       bool disablePermission,
-      String userId}) async {
+      String userId,
+      List<ServerConfig> serverConfigs}) async {
     final Map ret = await _channel.invokeMethod('initialize', {
       'appkey': appkey,
       'secret': secret,
@@ -82,7 +96,8 @@ class Mop {
       'apiPrefix': apiPrefix,
       'cryptType': cryptType,
       'disablePermission': disablePermission,
-      'userId': userId
+      'userId': userId,
+      'serverConfigs',serverConfigs.map((e) => e.toJson())
     });
     return ret;
   }