diff --git a/src/org/flexlite/domUI/components/UIAsset.as b/src/org/flexlite/domUI/components/UIAsset.as
index 765847d..21ef6a5 100644
--- a/src/org/flexlite/domUI/components/UIAsset.as
+++ b/src/org/flexlite/domUI/components/UIAsset.as
@@ -307,8 +307,8 @@ package org.flexlite.domUI.components
 				}
 				else
 				{
-					_skin.width = unscaledWidth;
-					_skin.height = unscaledHeight;
+					if(_skin.width != unscaledWidth)_skin.width = unscaledWidth;
+					if(_skin.height != unscaledHeight)_skin.height = unscaledHeight;
 					if(_skin is IInvalidateDisplay)
 						IInvalidateDisplay(_skin).validateNow();
 				}
@@ -374,4 +374,4 @@ package org.flexlite.domUI.components
 			throw(new Error("swapChildrenAt()"+errorStr+"swapElementsAt()代替"));
 		}
 	}
-}
\ No newline at end of file
+}