未固定列

.el-table tbody tr:hover > td {
  background-color: #ffe6d2 !important;
}

 

固定列

.el-table tbody tr:hover > td {
  background-color: #ffe6d2 !important;
}

.el-table__body tr.hover-row.current-row > td,
.el-table__body tr.hover-row.el-table__row--striped.current-row > td,
.el-table__body tr.hover-row.el-table__row--striped > td,
.el-table__body tr.hover-row > td {
  background-color: #ffe6d2 !important;
}