diff --git a/src/table/hooks/useRowSelect.tsx b/src/table/hooks/useRowSelect.tsx
index 59a8d2ee01..3d40794479 100644
--- a/src/table/hooks/useRowSelect.tsx
+++ b/src/table/hooks/useRowSelect.tsx
@@ -24,7 +24,7 @@ export default function useRowSelect(
   props: TdPrimaryTableProps,
   tableSelectedClasses: TableClassName['tableSelectedClasses'],
 ) {
-  const { selectedRowKeys, columns, rowKey, data, pagination, reserveSelectedRowOnPaginate } = toRefs(props);
+  const { selectedRowKeys, columns, rowKey, data, reserveSelectedRowOnPaginate } = toRefs(props);
   const currentPaginateData = ref<TableRowData[]>(data.value);
   const selectedRowClassNames = ref();
   const [tSelectedRowKeys, setTSelectedRowKeys] = useDefaultValue(
@@ -54,18 +54,6 @@ export default function useRowSelect(
     return singleSelectCol.checkProps.allowUncheck;
   });
 
-  watch(
-    [data, pagination, reserveSelectedRowOnPaginate],
-    () => {
-      if (reserveSelectedRowOnPaginate.value) return;
-      const { pageSize, current, defaultPageSize, defaultCurrent } = pagination.value;
-      const tPageSize = pageSize || defaultPageSize;
-      const tCurrent = current || defaultCurrent;
-      currentPaginateData.value = data.value.slice(tPageSize * (tCurrent - 1), tPageSize * tCurrent);
-    },
-    { immediate: true },
-  );
-
   watch(
     [data, columns, tSelectedRowKeys, selectColumn, rowKey],
     () => {
diff --git a/src/table/thead.tsx b/src/table/thead.tsx
index d02a09e060..a3416560db 100644
--- a/src/table/thead.tsx
+++ b/src/table/thead.tsx
@@ -144,6 +144,7 @@ export default defineComponent({
           const thClasses = [
             thStyles.classes,
             customClasses,
+            col.thClassName,
             {
               // 受 rowspan 影响，部分 tr > th:first-child 需要补足左边框
               [this.tableHeaderClasses.thBordered]: thBorderMap.get(col),