diff --git a/YNPageViewController/YNPageViewController/Libs/YNPageViewController/Category/UIView+YNPageExtend.h b/YNPageViewController/YNPageViewController/Libs/YNPageViewController/Category/UIView+YNPageExtend.h
index aca2698..f7c6cb9 100644
--- a/YNPageViewController/YNPageViewController/Libs/YNPageViewController/Category/UIView+YNPageExtend.h
+++ b/YNPageViewController/YNPageViewController/Libs/YNPageViewController/Category/UIView+YNPageExtend.h
@@ -18,6 +18,8 @@
 
 #define kYNPAGE_TABBARHEIGHT (kYNPAGE_IS_IPHONE_X ? 83 : 49)
 
+#define kLESS_THAN_iOS11 ([[UIDevice currentDevice].systemVersion floatValue] < 11.0 ? YES : NO)
+
 @interface UIView (YNPageExtend)
 
 @property (nonatomic, assign) CGFloat yn_x;
diff --git a/YNPageViewController/YNPageViewController/Libs/YNPageViewController/YNPageViewController.m b/YNPageViewController/YNPageViewController/Libs/YNPageViewController/YNPageViewController.m
index 32add20..30193a1 100644
--- a/YNPageViewController/YNPageViewController/Libs/YNPageViewController/YNPageViewController.m
+++ b/YNPageViewController/YNPageViewController/Libs/YNPageViewController/YNPageViewController.m
@@ -462,7 +462,9 @@ - (void)setupPageScrollView {
         self.config.contentHeight = self.pageScrollView.yn_height;
         
         [self.bgScrollView addSubview:self.pageScrollView];
-        
+        if (kLESS_THAN_iOS11) {
+            [self.view addSubview:[UIView new]];
+        }
         [self.view addSubview:self.bgScrollView];
         
     } else {
@@ -472,7 +474,9 @@ - (void)setupPageScrollView {
         self.pageScrollView.contentSize = CGSizeMake(kYNPAGE_SCREEN_WIDTH * self.controllersM.count, contentHeight - ([self isTopStyle] ? self.config.menuHeight : 0));
         
         self.config.contentHeight = self.pageScrollView.yn_height - self.config.menuHeight;
-        
+        if (kLESS_THAN_iOS11) {
+            [self.view addSubview:[UIView new]];            
+        }
         [self.view addSubview:self.pageScrollView];
     }
 }
@@ -734,6 +738,7 @@ - (UIScrollView *)getScrollViewWithPageIndex:(NSInteger)pageIndex {
             if (scrollView) {
                 scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
             }
+        } else {
         }
     }
     NSAssert(scrollView != nil, @"请设置pageViewController 的数据源！");