diff --git a/ios/Hera/Page/Views/WDHTabBarViewController.m b/ios/Hera/Page/Views/WDHTabBarViewController.m
index ca8f099..54cc08f 100755
--- a/ios/Hera/Page/Views/WDHTabBarViewController.m
+++ b/ios/Hera/Page/Views/WDHTabBarViewController.m
@@ -94,7 +94,7 @@ - (void)viewDidLayoutSubviews{
 			tabbarFrame = (CGRect){0,naviHeight,w,49};
 		}else {
 			CGFloat tabbarHeight = IS_IPHONE_X ? 83 : 49;
-			tabbarFrame = (CGRect){0,h - self.tabbar.wdh_view.bounds.size.height,w,tabbarHeight};
+            tabbarFrame = (CGRect){0,h - tabbarHeight,w,tabbarHeight};
 		}
 		
 		self.tabbar.wdh_view.frame = tabbarFrame;
diff --git a/ios/Hera/Tools/WDHDeviceMacro.h b/ios/Hera/Tools/WDHDeviceMacro.h
index b563252..409a926 100644
--- a/ios/Hera/Tools/WDHDeviceMacro.h
+++ b/ios/Hera/Tools/WDHDeviceMacro.h
@@ -34,7 +34,8 @@
 #define IS_IPHONE_6      (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 667.0)
 #define IS_IPHONE_6PLUS  (IS_IPHONE && [[UIScreen mainScreen] nativeScale] == 3.0f)
 #define IS_IPHONE_6_PLUS (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 736.0)
-#define IS_IPHONE_X  	 (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 812.0)
+#define IS_IOS_11  ([[[UIDevice currentDevice] systemVersion] floatValue] >= 11.f)
+#define IS_IPHONE_X (IS_IOS_11 && IS_IPHONE && (MIN([UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height) >= 375 && MAX([UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height) >= 812))
 
 
 #endif /* WDHDeviceMacro_h */