diff --git a/RTRootNavigationController/Classes/RTRootNavigationController.m b/RTRootNavigationController/Classes/RTRootNavigationController.m
index 875c6c8..5366b02 100644
--- a/RTRootNavigationController/Classes/RTRootNavigationController.m
+++ b/RTRootNavigationController/Classes/RTRootNavigationController.m
@@ -187,7 +187,6 @@ - (instancetype)initWithController:(UIViewController *)controller
             self.containerNavigationController.viewControllers = @[controller];
         
         [self addChildViewController:self.containerNavigationController];
-        [self.containerNavigationController didMoveToParentViewController:self];
     }
     return self;
 }
@@ -222,7 +221,6 @@ - (instancetype)initWithContentController:(UIViewController *)controller
     if (self) {
         self.contentViewController = controller;
         [self addChildViewController:self.contentViewController];
-        [self.contentViewController didMoveToParentViewController:self];
     }
     return self;
 }
@@ -332,6 +330,20 @@ - (UITabBarItem *)tabBarItem
     return self.contentViewController.tabBarItem;
 }
 
+-(void)willMoveToParentViewController:(UIViewController *)parent
+{
+    [super willMoveToParentViewController:parent];
+    if (parent) return;
+    [self.contentViewController willMoveToParentViewController:parent];
+}
+
+-(void)didMoveToParentViewController:(UIViewController *)parent
+{
+    [super didMoveToParentViewController:parent];
+    if (parent) return;
+    [self.contentViewController didMoveToParentViewController:parent];
+}
+
 @end
 
 @interface UIViewController (RTContainerNavigationController)