a： form-item裡面嵌2個form-item

       後臺互動介面你自己定就好，幹嘛非要跟著產品來

   <a-form-item
          label="價格"
          :labelCol="labelCol"
          :wrapperCol="wrapperCol"
        >
          <span class="myRedStar">*</span>
          <!-- <a-slider range :default-value="[0, 0]" /> 
 
-->
          <a-form-item
            class="price_max"
            style="display:inline-block;width:120px;"
            :labelCol="labelCol"
            :wrapperCol="wrapperCol"
          >
            <a-input-number
              class="price_min"
              style="width: 110px"
              :max
 
="100"
              :min="0"
              v-decorator="[
                'price_min',
                {rules: [{ required: true, message: '請輸入下限' }], initialValue: currentRecord.price_min}
              ]"
              placeholder="下限"
            />

          </a-form-item>
          <span 
 
style="display:inline-block;margin-right: 16px">~</span>

          <a-form-item
            class="price_max"
            style="display:inline-block;width:120px;"
            :labelCol="labelCol"
            :wrapperCol="wrapperCol"
          >
            <a-input-number
              style="width: 110px"
              :max="100"
              :min="0"
              v-decorator="[
                'price_max',
                {rules: [{ required: true, message: '請輸入上限' }], initialValue: currentRecord.price_max}
              ]"
              placeholder="上限"
            />
          </a-form-item>
        </a-form-item>

<style lang="less">
.myRedStar {
  position: absolute;
  left: -54px;
  top: 2px;
  display: inline-block;
  font-family: SimSun;
  line-height: 1;
  font-size: 14px;
  color: #f5222d;
}

</style>