diff --git a/cocos/2d/CCLabel.cpp b/cocos/2d/CCLabel.cpp
index 2c039da0c5..9af6f28f23 100644
--- a/cocos/2d/CCLabel.cpp
+++ b/cocos/2d/CCLabel.cpp
@@ -788,25 +788,32 @@ void Label::enableShadow(const Color4B& shadowColor /* = Color4B::BLACK */,const
     //TODO: support blur for shadow
     _shadowBlurRadius = 0;
 
-    if (_textSprite && _shadowNode)
-    {
-        if (shadowColor != _shadowColor4F)
-        {
-            Node::removeChild(_shadowNode, true);
-            _shadowNode = nullptr;
-            createShadowSpriteForSystemFont();
-        }
-        else
-        {
-            _shadowNode->setPosition(_shadowOffset.width, _shadowOffset.height);
-        }
-    }
-
     _shadowColor3B.r = shadowColor.r;
     _shadowColor3B.g = shadowColor.g;
     _shadowColor3B.b = shadowColor.b;
     _shadowOpacity = shadowColor.a;
 
+    if (!_systemFontDirty && !_contentDirty && _textSprite)
+    {
+        if (_shadowNode)
+        {
+            if (shadowColor != _shadowColor4F)
+            {
+                Node::removeChild(_shadowNode, true);
+                _shadowNode = nullptr;
+                createShadowSpriteForSystemFont();
+            }
+            else
+            {
+                _shadowNode->setPosition(_shadowOffset.width, _shadowOffset.height);
+            }
+        }
+        else
+        {
+            createShadowSpriteForSystemFont();
+        }
+    }
+
     _shadowColor4F.r = shadowColor.r / 255.0f;
     _shadowColor4F.g = shadowColor.g / 255.0f;
     _shadowColor4F.b = shadowColor.b / 255.0f;
@@ -1038,18 +1045,18 @@ void Label::createSpriteForSystemFont()
 
 void Label::createShadowSpriteForSystemFont()
 {
-    if (!_fontDefinition._stroke._strokeEnabled && _fontDefinition._fontFillColor == _shadowColor4F
-        && (_fontDefinition._fontAlpha == _shadowColor4F.a * 255))
+    if (!_fontDefinition._stroke._strokeEnabled && _fontDefinition._fontFillColor == _shadowColor3B
+        && (_fontDefinition._fontAlpha == _shadowOpacity))
     {
         _shadowNode = Sprite::createWithTexture(_textSprite->getTexture());
     }
     else
     {
         auto shadowFontDefinition = _fontDefinition;
-        shadowFontDefinition._fontFillColor.r = _shadowColor4F.r * 255;
-        shadowFontDefinition._fontFillColor.g = _shadowColor4F.g * 255;
-        shadowFontDefinition._fontFillColor.b = _shadowColor4F.b * 255;
-        shadowFontDefinition._fontAlpha = _shadowColor4F.a * 255;
+        shadowFontDefinition._fontFillColor.r = _shadowColor3B.r;
+        shadowFontDefinition._fontFillColor.g = _shadowColor3B.g;
+        shadowFontDefinition._fontFillColor.b = _shadowColor3B.b;
+        shadowFontDefinition._fontAlpha = _shadowOpacity;
 
         shadowFontDefinition._stroke._strokeColor = shadowFontDefinition._fontFillColor;
         shadowFontDefinition._stroke._strokeAlpha = shadowFontDefinition._fontAlpha;