如果想使用插槽，又不想新增都一個節點，那就把父元件的插槽的標籤也改為slot

這樣就可以了：如下

子元件：

<slot name="header">
</slot>

<slotslot="header">
  <el-form-item label="網點名稱:" prop="rentingHouseName">
    <el-autocomplete
class="inline-input"
v-model="searchForm.rentingHouseName"
:fetch-suggestions="querySearchRentingHouse"
 
placeholder="輸入關鍵字查詢"
:trigger-on-focus="false"
@select="handleSelect">
    </el-autocomplete>
  </el-form-item>
  <el-form-item label="模糊欄位:" prop="fuzzySearchKey">
    <el-input  v-model="searchForm.fuzzySearchKey" placeholder="模糊欄位姓名或身份證等"></el-input>
  </el-form-item>
 
  <el-form-item label="有效時間:">
    <el-col :span="11">
      <el-form-item prop="startDate">
        <el-date-picker  type="datetime" placeholder="無限制" v-model="searchForm.startDate"  style="width: 100%;"></el-date-picker>
      </el-form-item>
    </el-col>
    <el-col 
 
class="line" :span="2" style="text-align: center;color: #ffffff;">-</el-col>
    <el-col :span="11">
      <el-form-item prop="validDate">
        <el-date-picker type="datetime"  placeholder="無限制"  v-model="searchForm.validDate"  style="width: 100%;"></el-date-picker>
      </el-form-item>
    </el-col>
  </el-form-item>
  <el-form-item label="開門方式:" prop="logType">
    <el-select  v-model="searchForm.logType" placeholder="全部">
      <el-option label="全部" value=""></el-option>
      <el-option v-for="item in logTypesList" :label="item.desc" :value="item.value"></el-option>
    </el-select>
  </el-form-item>
</slot>

這樣解析出來的就只有四個<el-form-item></el-form-item>標籤