diff --git a/ios/sdk/WeexSDK/Sources/Debug/WXDebugTool.m b/ios/sdk/WeexSDK/Sources/Debug/WXDebugTool.m
index 5ded1aa8d4..310ec438ac 100644
--- a/ios/sdk/WeexSDK/Sources/Debug/WXDebugTool.m
+++ b/ios/sdk/WeexSDK/Sources/Debug/WXDebugTool.m
@@ -68,7 +68,7 @@ + (void)getData:(NSURL*)url key:(NSString*)key{
     void(^scriptLoadFinish)(NSString*, NSString*) = ^(NSString* key, NSString* script){
         if ([key isEqualToString:@"jsframework"]) {
             WXDebugrepJSFramework = script;
-            [[WXSDKManager bridgeMgr] unload];
+            [WXSDKManager unload];
             [WXSDKEngine initSDKEnviroment:script];
         }else {
             WXDebugrepBundleJS = script;