<select id="city" class="select">
  <option value="贵阳">贵阳</option>
  <option value="六盘水">六盘水</option>
  <option value="都匀">都匀</option>
  <option value="福泉">福泉</option>
  <option value="遵义">遵义</option>
  <option value="兴义">兴义</option>
  <option value="安顺">安顺</option>
  <option value="凯里">凯里</option>
  <option value="毕节">毕节</option>
</select>

引入js并调用。

<script src='http://libs.itshubao.com/jquery/2.1.3/jquery.min.js'></script>
<script src="js/nicescroll/jquery-nicescroll.js"></script>
<script src="js/jquery-jSelect.min.js" ></script>
<script type="text/javascript">
$(".select").jSelect();
</script>