diff --git a/WXDevtool.podspec b/WXDevtool.podspec
index 33ffd7a..3cd1f30 100644
--- a/WXDevtool.podspec
+++ b/WXDevtool.podspec
@@ -3,7 +3,7 @@ Pod::Spec.new do |s|
 
   s.name         = "WXDevtool"
 
-  s.version      = "0.17.1"
+  s.version      = "0.20.0"
 
   s.summary      = "WXDevtool Source."
 
@@ -30,7 +30,7 @@ Pod::Spec.new do |s|
   s.ios.deployment_target = "8.0"
   
   # cocoapods
-  s.source =   { :git => "https://github.com/weexteam/weex-devtool-iOS.git", :tag => "0.17.1" }
+  s.source =   { :git => "https://github.com/weexteam/weex-devtool-iOS.git", :tag => "0.20.0" }
   s.source_files = "sdk/WXDevTool/Source/**/*.{h,m,mm,c}"
 
   s.requires_arc = true
diff --git a/sdk/WXDevTool.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist b/sdk/WXDevTool.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
new file mode 100644
index 0000000..18d9810
--- /dev/null
+++ b/sdk/WXDevTool.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>
diff --git a/sdk/WXDevTool/Source/PonyDebugger/WXDebugger.h b/sdk/WXDevTool/Source/PonyDebugger/WXDebugger.h
index 4aa1fd6..9c29697 100644
--- a/sdk/WXDevTool/Source/PonyDebugger/WXDebugger.h
+++ b/sdk/WXDevTool/Source/PonyDebugger/WXDebugger.h
@@ -12,7 +12,6 @@
 #import <Foundation/Foundation.h>
 #import <CoreData/CoreData.h>
 #import <WeexSDK/WeexSDK.h>
-#import <WeexSDK/WXTracingManager.h>
 
 #pragma mark - Preprocessor
 
diff --git a/sdk/WXDevTool/Source/WXHeader/WXDevTool.m b/sdk/WXDevTool/Source/WXHeader/WXDevTool.m
index cbb8399..013aba1 100644
--- a/sdk/WXDevTool/Source/WXHeader/WXDevTool.m
+++ b/sdk/WXDevTool/Source/WXHeader/WXDevTool.m
@@ -11,7 +11,7 @@
 #import "WXDevToolType.h"
 #import <WeexSDK/WeexSDK.h>
 
-#define WXDevtool_VERSION @"0.17.1"
+#define WXDevtool_VERSION @"0.20.0"
 
 @implementation WXDevTool
 
diff --git a/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.h b/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.h
index 384e5f7..2c53671 100755
--- a/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.h
+++ b/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.h
@@ -9,7 +9,6 @@
 #import <Foundation/Foundation.h>
 #import <UIKit/UIKit.h>
 #import <objc/runtime.h>
-#import <WeexSDK/WXTracingManager.h>
 
 #define FLEXFloor(x) (floor([[UIScreen mainScreen] scale] * (x)) / [[UIScreen mainScreen] scale])
 #define TracingResetLogDataNoti @"TracingResetLogDataNoti"
@@ -52,7 +51,6 @@
 
 + (NSArray *)allWindows;
 + (NSString *)tracingTime;
-+ (NSArray *)formatTask:(WXTracingTask *)task;
 
 // Swizzling utilities
 
diff --git a/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.m b/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.m
index 0bbd383..26459da 100755
--- a/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.m
+++ b/sdk/WXDevTool/Source/WXTracing/WXNetwork/WXTracingUtility.m
@@ -370,14 +370,6 @@ +(NSString *)tracingTime
     NSString *str = [outputFormatter stringFromDate:[NSDate date]];
     return str;
 }
-+ (NSArray *)formatTask:(WXTracingTask *)task
-{
-    NSMutableArray *array = [NSMutableArray new];
-    for (WXTracing *t in task.tracings) {
-        [array addObject:[t dictionary]];
-    }
-    return array;
-}
 
 // Swizzling utilities
 + (SEL)swizzledSelectorForSelector:(SEL)selector