开始把控件局限在label上，发现实现起来似乎不太现实。应该用textarea控件：

复制代码 代码如下:

<?xml version="1.0" encoding="utf-8"?>

<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"

xmlns:s="library://ns.adobe.com/flex/spark"

xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="inital();">

<fx:Script>

<![CDATA[

import flashx.textLayout.conversion.TextConverter;

public function inital():void{

var str:String = "<font color='#ff0000'>123456<font color='#32CD32'>shit</font></font>";

txt.textFlow = TextConverter.importToFlow(str, TextConverter.TEXT_FIELD_HTML_FORMAT);

//txtArea.text = "我是中国人我是中国人我是中国人我是中国人";

}

]]>

</fx:Script>

<mx:Canvas x="300" y="300" width="500" height="500">

<s:TextArea id="txt">

</s:TextArea>

</mx:Canvas>

</s:Application>