直接上代码吧

  .checkOverHidden /deep/ .el-checkbox__label{
      display: inline-grid!important;
      white-space: pre-line!important;
      word-wrap: break-word!important;
      overflow: hidden!important;
      padding-right: 10px!important;
    }
  .checkOverHidden /deep/ b{
    display: inline-block;
    min-width: 53px;
  }

给超长文字的加个class,然后直接强制覆盖，我一开始是按照网上说的 >>>,但是我的项目好像不行，会直接报错，然后我就用了deep