diff --git a/iOS/Pod/Classes/Shader/DoricGroupNode.m b/iOS/Pod/Classes/Shader/DoricGroupNode.m
index 763e16c4..92ba1265 100644
--- a/iOS/Pod/Classes/Shader/DoricGroupNode.m
+++ b/iOS/Pod/Classes/Shader/DoricGroupNode.m
@@ -17,7 +17,9 @@ - (instancetype)initWithContext:(DoricContext *)doricContext {
     return self;
 }
 - (UIView *)build:(NSDictionary *)props {
-    return [[UIView alloc] init];
+    UIView *ret = [[UIView alloc] init];
+    ret.clipsToBounds = YES;
+    return ret;
 }
 
 - (void)blendView:(UIView *)view forPropName:(NSString *)name propValue:(id)prop {
diff --git a/iOS/Pod/Classes/Shader/DoricHLayoutNode.m b/iOS/Pod/Classes/Shader/DoricHLayoutNode.m
index 389b9b80..608f697d 100644
--- a/iOS/Pod/Classes/Shader/DoricHLayoutNode.m
+++ b/iOS/Pod/Classes/Shader/DoricHLayoutNode.m
@@ -30,7 +30,7 @@ - (void)blendView:(id)view forPropName:(NSString *)name propValue:(id)prop {
 - (void)blendChild:(DoricViewNode *)child layoutConfig:(NSDictionary *)layoutconfig {
     [super blendChild:child layoutConfig:layoutconfig];
     if (![child.layoutParams isKindOfClass:VHLayoutParams.class]) {
-        DoricLog(@"blend VLayout child error,layout params not match");
+        DoricLog(@"blend HLayout child error,layout params not match");
         return;
     }
     VHLayoutParams *params = (VHLayoutParams *)child.layoutParams;
@@ -84,8 +84,8 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
     if (self.layoutParams.height == LAYOUT_MATCH_PARENT) {
         self.height = parent.height;
     }
-    // layotu child
-    CGFloat xStart = 0, yStart = 0;
+    // layout child
+    CGFloat xStart = 0;
     if ((self.gravity & LEFT) == LEFT) {
         xStart = 0;
     } else if ((self.gravity & RIGHT) == RIGHT) {
@@ -94,14 +94,6 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
         xStart = (self.width -self.desiredWidth)/2;
     }
     
-    if ((self.gravity & TOP) == TOP) {
-        yStart = 0;
-    } else if ((self.gravity & BOTTOM) == BOTTOM) {
-        yStart = self.height - self.desiredHeight;
-    } else if ((self.gravity & CENTER_Y) == CENTER_Y) {
-        yStart = (self.height -self.desiredHeight)/2;
-    }
-    
     for (DoricViewNode *child in self.indexedChildren) {
         if (child.layoutParams.width == LAYOUT_MATCH_PARENT) {
             child.width = self.width;
@@ -112,13 +104,13 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
         
         if ([child.layoutParams isKindOfClass:VHLayoutParams.class]) {
             VHLayoutParams *layoutParams = (VHLayoutParams *)child.layoutParams;
-            DoricGravity gravity = layoutParams.alignment;
+            DoricGravity gravity = layoutParams.alignment | self.gravity;
             if ((gravity & TOP) == TOP) {
-                child.top = yStart;
+                child.top = 0;
             } else if ((gravity & BOTTOM) == BOTTOM) {
-                child.bottom = yStart + self.desiredHeight;
+                child.bottom = self.height;
             } else if ((gravity & CENTER_Y) == CENTER_Y) {
-                child.centerY = yStart + self.desiredHeight/2;
+                child.centerY = self.height/2;
             }
         }
         child.left = xStart;
diff --git a/iOS/Pod/Classes/Shader/DoricRootNode.m b/iOS/Pod/Classes/Shader/DoricRootNode.m
index 430bb6a5..57e24ed2 100644
--- a/iOS/Pod/Classes/Shader/DoricRootNode.m
+++ b/iOS/Pod/Classes/Shader/DoricRootNode.m
@@ -12,12 +12,6 @@ - (void)setupRootView:(UIView *)view {
     self.view = view;
 }
 
-- (void)measureByParent:(DoricGroupNode *)parent {
-    // Do noting for root
-    [super measureByParent:self];
-}
-
-
 - (void)render:(NSDictionary *)props {
     [self blend:props];
     [self measureByParent:self];
diff --git a/iOS/Pod/Classes/Shader/DoricStackNode.m b/iOS/Pod/Classes/Shader/DoricStackNode.m
index f9bccd17..96e5ce34 100644
--- a/iOS/Pod/Classes/Shader/DoricStackNode.m
+++ b/iOS/Pod/Classes/Shader/DoricStackNode.m
@@ -6,6 +6,7 @@
 //
 
 #import "DoricStackNode.h"
+#import "DoricUtil.h"
 
 @implementation DoricStackNode
 
@@ -42,9 +43,28 @@ - (LayoutParams *)generateDefaultLayoutParams {
     return [[StackLayoutParams alloc] init];
 }
 
+- (void)blendChild:(DoricViewNode *)child layoutConfig:(NSDictionary *)layoutconfig {
+    [super blendChild:child layoutConfig:layoutconfig];
+    if (![child.layoutParams isKindOfClass:StackLayoutParams.class]) {
+        DoricLog(@"blend Stack child error,layout params not match");
+        return;
+    }
+    StackLayoutParams *params = (StackLayoutParams *)child.layoutParams;
+//    NSDictionary *margin = [layoutconfig objectForKey:@"margin"];
+//    if (margin) {
+//        params.margin.top = [(NSNumber *)[margin objectForKey:@"top"] floatValue];
+//        params.margin.left = [(NSNumber *)[margin objectForKey:@"left"] floatValue];
+//        params.margin.right = [(NSNumber *)[margin objectForKey:@"right"] floatValue];
+//        params.margin.bottom = [(NSNumber *)[margin objectForKey:@"bottom"] floatValue];
+//    }
+    NSNumber *alignment = [layoutconfig objectForKey:@"alignment"];
+    if (alignment) {
+        params.alignment = [alignment integerValue];
+    }
+}
+
 - (void)layoutByParent:(DoricGroupNode *)parent {
     for (DoricViewNode *child in self.indexedChildren) {
-        [child measureByParent:self];
         if (child.layoutParams.width == LAYOUT_MATCH_PARENT) {
             child.width = self.width;
         }
@@ -53,7 +73,7 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
         }
         DoricGravity gravity = self.gravity;
         if ([child.layoutParams isKindOfClass:StackLayoutParams.class]) {
-            StackLayoutParams *layoutParams = (StackLayoutParams *)self.layoutParams;
+            StackLayoutParams *layoutParams = (StackLayoutParams *)child.layoutParams;
             gravity |= layoutParams.alignment;
         }
         
@@ -75,6 +95,7 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
         if ((gravity & CENTER_Y) == CENTER_Y) {
             child.centerY = self.centerY;
         }
+        [child layoutByParent:self];
     }
 }
 @end
diff --git a/iOS/Pod/Classes/Shader/DoricVLayoutNode.m b/iOS/Pod/Classes/Shader/DoricVLayoutNode.m
index 2fe14284..937eb020 100644
--- a/iOS/Pod/Classes/Shader/DoricVLayoutNode.m
+++ b/iOS/Pod/Classes/Shader/DoricVLayoutNode.m
@@ -83,16 +83,8 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
     if (self.layoutParams.height == LAYOUT_MATCH_PARENT) {
         self.height = parent.height;
     }
-    // layotu child
-    CGFloat xStart = 0, yStart = 0;
-    if ((self.gravity & LEFT) == LEFT) {
-        xStart = 0;
-    } else if ((self.gravity & RIGHT) == RIGHT) {
-        xStart = self.width - self.desiredWidth;
-    } else if ((self.gravity & CENTER_X) == CENTER_X) {
-        xStart = (self.width -self.desiredWidth)/2;
-    }
-    
+    // layout child
+    CGFloat yStart = 0;
     if ((self.gravity & TOP) == TOP) {
         yStart = 0;
     } else if ((self.gravity & BOTTOM) == BOTTOM) {
@@ -111,13 +103,13 @@ - (void)layoutByParent:(DoricGroupNode *)parent {
         }
         if ([child.layoutParams isKindOfClass:VHLayoutParams.class]) {
             VHLayoutParams *layoutParams = (VHLayoutParams *)child.layoutParams;
-            DoricGravity gravity = layoutParams.alignment;
+            DoricGravity gravity = layoutParams.alignment | self.gravity;
             if ((gravity & LEFT) == LEFT) {
-                child.left = xStart;
+                child.left = 0;
             } else if ((gravity & RIGHT) == RIGHT) {
-                child.right = xStart + self.desiredWidth;
+                child.right = self.width;
             } else if ((gravity & CENTER_X) == CENTER_X) {
-                child.centerX = xStart + self.desiredWidth/2;
+                child.centerX = self.width/2;
             }
         }        
         child.top = yStart;
diff --git a/iOS/Pod/Classes/Shader/DoricViewNode.m b/iOS/Pod/Classes/Shader/DoricViewNode.m
index 3b7341ab..83ec6ef5 100644
--- a/iOS/Pod/Classes/Shader/DoricViewNode.m
+++ b/iOS/Pod/Classes/Shader/DoricViewNode.m
@@ -151,7 +151,7 @@ - (CGFloat)centerX {
 }
 
 - (CGFloat)centerY {
-    return ((UIView *)self.view).centerX;
+    return ((UIView *)self.view).centerY;
 }
 
 - (void)setX:(CGFloat)x {
diff --git a/js-framework/demo.ts b/js-framework/demo.ts
index 5ef14eeb..a8cc10b8 100644
--- a/js-framework/demo.ts
+++ b/js-framework/demo.ts
@@ -50,7 +50,6 @@ class CounterVM extends ViewModel<CountModel, CounterView> {
         })
     }
 }
-
 @Entry
 class MyPage extends VMPanel<CountModel, CounterView>{