diff --git a/packages/s2-core/__tests__/unit/utils/export/__snapshots__/export-pivot-spec.ts.snap b/packages/s2-core/__tests__/unit/utils/export/__snapshots__/export-pivot-spec.ts.snap
index c8675559a2..e5aab4ae9b 100644
--- a/packages/s2-core/__tests__/unit/utils/export/__snapshots__/export-pivot-spec.ts.snap
+++ b/packages/s2-core/__tests__/unit/utils/export/__snapshots__/export-pivot-spec.ts.snap
@@ -228,7 +228,7 @@ province	city	数值	数值	数值	数值
 
 exports[`PivotSheet Export Test should export correct data with formatter for custom column headers 1`] = `
 "	自定义节点 a-1	自定义节点 a-1	自定义节点 a-1	自定义节点 a-1	自定义节点 a-2
-	自定义节点 a-2	自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-2	
+	自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-2	
 type	sub_type	指标1	指标2		
 家具	桌子	13	2	-	-
 家具	椅子	11	8	-	-"
@@ -243,6 +243,21 @@ exports[`PivotSheet Export Test should export correct data with formatter for cu
 自定义节点 a-2			-	-"
 `;
 
+exports[`PivotSheet Export Test should export correctly corner text for custom columns 1`] = `
+"	自定义节点 a-1	自定义节点 a-1	自定义节点 a-1	自定义节点 a-1	自定义节点 a-2
+	自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-2	
+type	sub_type	指标1	指标2		
+家具	桌子	13	2	-	-
+家具	椅子	11	8	-	-"
+`;
+
+exports[`PivotSheet Export Test should export correctly corner text for custom columns and single rows 1`] = `
+"自定义节点 a-1	自定义节点 a-1	自定义节点 a-1	自定义节点 a-1	自定义节点 a-2
+自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-1	自定义节点 a-1-2	
+type	指标1	指标2		
+家具	11	8	-	-"
+`;
+
 exports[`PivotSheet Export Test should export correctly data for single row data by { async: false } 1`] = `
 Array [
   "	type	笔	笔",
diff --git a/packages/s2-core/__tests__/unit/utils/export/export-pivot-spec.ts b/packages/s2-core/__tests__/unit/utils/export/export-pivot-spec.ts
index 67dff86427..ab3f56c7d5 100644
--- a/packages/s2-core/__tests__/unit/utils/export/export-pivot-spec.ts
+++ b/packages/s2-core/__tests__/unit/utils/export/export-pivot-spec.ts
@@ -575,4 +575,34 @@ describe('PivotSheet Export Test', () => {
       formatData: true,
     });
   });
+
+  it('should export correctly corner text for custom columns', async () => {
+    const sheet = new PivotSheet(
+      getContainer(),
+      {
+        data: CustomGridData,
+        fields: customColGridSimpleFields,
+      },
+      assembleOptions(),
+    );
+
+    await expectMatchSnapshot(sheet);
+  });
+
+  // https://github.com/antvis/S2/issues/2844
+  it('should export correctly corner text for custom columns and single rows', async () => {
+    const sheet = new PivotSheet(
+      getContainer(),
+      {
+        data: CustomGridData,
+        fields: {
+          ...customColGridSimpleFields,
+          rows: ['type'],
+        },
+      },
+      assembleOptions(),
+    );
+
+    await expectMatchSnapshot(sheet);
+  });
 });
diff --git a/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts b/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts
index ef1e0b6387..0d1cf0e4b8 100644
--- a/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts
+++ b/packages/s2-core/src/utils/export/copy/pivot-data-cell-copy.ts
@@ -305,16 +305,23 @@ export class PivotDataCellCopy extends BaseDataCellCopy {
       return this.getCustomRowCornerMatrix(rowMatrix);
     }
 
+    const { colsHierarchy } = this.spreadsheet.facet.getLayoutResult();
     const { fields } = this.spreadsheet.dataCfg;
     const { columns = [], rows = [] } = fields;
-    // 为了对齐数值
-    const customColumns = [...columns, ''];
+    // 为了对齐数值, 增加 "" 占位
+    // 自定义列头不需要占位, 但是为树状结构, 需要根据采样节点解析: https://github.com/antvis/S2/issues/2844)
+    const customColumns = this.spreadsheet.isCustomColumnFields()
+      ? colsHierarchy
+          .getNodes()
+          .slice(0, colsHierarchy.sampleNodesForAllLevels.length)
+          .map((node) => node.field)
+      : [...columns, ''];
     const maxRowLen = this.spreadsheet.isHierarchyTreeType()
       ? getMaxRowLen(rowMatrix ?? [])
       : rows.length;
     const customRows = slice(rows, 0, maxRowLen);
 
-    /*
+    /**
      * cornerMatrix 形成的矩阵为  rows.length(宽) * columns.length(高)
      */
     return map(customColumns, (colField, colIndex) =>