<option value="">请选择科室名称</option>//必须加上这一句,否则不判断是不是为空 <div class="layui-inline"> <label class="layui-form-label"> 科室名称 <span class="font_red">☀</span> </label> <div class="layui-input-block"> <select id="clientOfficeName" lay-verify="required" ...