diff --git a/src/utils/fixUtil.ts b/src/utils/fixUtil.ts
index 466ea6ed4..785ed8c88 100644
--- a/src/utils/fixUtil.ts
+++ b/src/utils/fixUtil.ts
@@ -70,22 +70,22 @@ export function getCellFixedInfo<RecordType = any>(
   const hasChildren = hasColumnChildren(curColumns);
 
   // no children only
-  const canLastFix = !(curColumns as ColumnGroupType<RecordType>)?.children || hasChildren;
+  const canLastFix = !(curColumns as ColumnGroupType<RecordType>)?.children;
 
   if (direction === 'rtl') {
     if (fixLeft !== undefined) {
       const prevFixLeft = prevColumn && prevColumn.fixed === 'left';
-      firstFixLeft = !prevFixLeft && canLastFix;
+      firstFixLeft = !prevFixLeft && (canLastFix || hasChildren);
     } else if (fixRight !== undefined) {
       const nextFixRight = nextColumn && nextColumn.fixed === 'right';
-      lastFixRight = !nextFixRight && canLastFix;
+      lastFixRight = !nextFixRight && (canLastFix || hasChildren);
     }
   } else if (fixLeft !== undefined) {
     const nextFixLeft = nextColumn && nextColumn.fixed === 'left';
     lastFixLeft = !nextFixLeft && canLastFix;
   } else if (fixRight !== undefined) {
     const prevFixRight = prevColumn && prevColumn.fixed === 'right';
-    firstFixRight = !prevFixRight && canLastFix;
+    firstFixRight = !prevFixRight && (canLastFix || hasChildren);
   }
 
   return {
diff --git a/tests/FixedHeader.spec.jsx b/tests/FixedHeader.spec.jsx
index 6798d2b4e..c3d3dd8f4 100644
--- a/tests/FixedHeader.spec.jsx
+++ b/tests/FixedHeader.spec.jsx
@@ -261,6 +261,8 @@ describe('Table.FixedHeader', () => {
     const wrapper = mount(<Table columns={columns} data={data} scroll={{ x: true }} />);
     await safeAct(wrapper);
     expect(wrapper.find('td').at(9).props().className).toContain('rc-table-cell-fix-left-last');
-    expect(wrapper.find('th').first().props().className).toContain('rc-table-cell-fix-left-last');
+    expect(wrapper.find('th').first().props().className).not.toContain(
+      'rc-table-cell-fix-left-last',
+    );
   });
 });