<el-row :gutter="20">
        <el-col :span="8">
          <el-input class="searchInput">
              <el-button slot="append" class="el-icon-search" type="primary"></el-button>
          </el-input>
        </el-col>
        <el-col :span="10">
          <el-button type="primary">添加商品</el-button>
        </el-col>
      </el-row>

input没有设置placeholder会导致对不齐 原因不详

添加之后就解决了

 

 相差4px