答案是：#box ul.games li img{vertical-align: middle;} 这行很重要哦。
<div id="box"> <div class="div01"><div class="border"><img src="../images/top_06.gif"></div><ul class="content01 black"><li class="clearfix"><ul class="gtype"><strong>角色扮演：</strong></ul><ul class="games clearfix"><li><img src="./images/smallgameicon/game_70.png"><a href="#" target="_blank">无上神兵</a></li><li><img src="./images/smallgameicon/game_72.png"><a href="#" target="_blank">九鼎记</a></li><li><img src="./images/smallgameicon/game_23.png"><a href="#" target="_blank" style="color:#f00;">神仙道</a></li><li><img src="./images/smallgameicon/game_56.png"><a href="#" target="_blank">女神联盟</a></li><li><img src="./images/smallgameicon/game_39.png"><a href="#" target="_blank">三国演义</a></li><li><img src="./images/smallgameicon/game_71.png"><a href="#" target="_blank">热血街机</a></li><li><img src="./images/smallgameicon/game_65.png"><a href="#" target="_blank">热血屠龙</a></li><li><img src="./images/smallgameicon/game_64.png"><a href="#" target="_blank">魅影传说</a></li><li><img src="./images/smallgameicon/game_25.png"><a href="#" target="_blank">盛世三国</a></li><li><img src="./images/smallgameicon/game_32.png"><a href="#" target="_blank">瑞星龙将</a></li><li><img src="./images/smallgameicon/game_34.png"><a href="#" target="_blank">梦幻飞仙</a></li><li><img src="./images/smallgameicon/game_63.png"><a href="#" target="_blank">深渊</a></li><li><img src="./images/smallgameicon/game_36.png"><a href="#" target="_blank">热血海贼王</a></li><li><img src="./images/smallgameicon/game_40.png"><a href="#" target="_blank">开天辟地</a></li><li><img src="./images/smallgameicon/game_42.png"><a href="#" target="_blank">秦美人</a></li><li><img src="./images/smallgameicon/game_16.jpg"><a href="#" target="_blank">凡人修真</a></li><li><img src="./images/smallgameicon/game_43.png"><a href="#" target="_blank">大侠传</a></li><li><img src="./images/smallgameicon/game_58.png"><a href="#" target="_blank">剑影</a></li><li><img src="./images/smallgameicon/game_41.png"><a href="#" target="_blank">仙落凡尘</a></li><li><img src="./images/smallgameicon/game_66.png"><a href="#" target="_blank">雷霆之怒</a></li></ul></li><li class="clearfix"><ul class="gtype"><strong>战争策略：</strong></ul><ul class="games clearfix"><li><img src="./images/smallgameicon/game_70.png"><a href="#" target="_blank">无上神兵</a></li><li><img src="./images/smallgameicon/game_72.png"><a href="#" target="_blank">九鼎记</a></li><li><img src="./images/smallgameicon/game_23.png"><a href="#" target="_blank" style="color:#f00;">神仙道</a></li></ul></li><li class="clearfix"><ul class="gtype"><strong>休闲竞技：</strong></ul><ul class="games clearfix"><li><img src="./images/smallgameicon/game_70.png"><a href="#" target="_blank">无上神兵</a></li><li><img src="./images/smallgameicon/game_72.png"><a href="#" target="_blank">九鼎记</a></li><li><img src="./images/smallgameicon/game_23.png"><a href="#" target="_blank" style="color:#f00;">神仙道</a></li></ul></li></ul><div class="border"><img src="../images/top_07.gif"></div></div></div>
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