SOURCE

$(function(){
  var json=[{source:'淘宝',shop:['1','2','3']},{source:'TTS',shop:['1','2','3']}];
  
  	function ini(){
  	var html="<option>请选择</option>";
  			for(var i=0;i<json.size;i++){
          html+="<option>"+json[i].source+"</option>";
        }
  
  		$("#source").html(html);
		}

ini();
});

<p>来源
  <select id="source">
     <option>请选择</option>
  </select>
</p>
<p>店铺
  <select id="shop">
    <option>请选择</option>
  </select></p>