diff --git a/common/changes/@visactor/vtable/fix-column-dimension-null-empty-distinction_2026-01-04-11-03.json b/common/changes/@visactor/vtable/fix-column-dimension-null-empty-distinction_2026-01-04-11-03.json
new file mode 100644
index 000000000..22576c986
--- /dev/null
+++ b/common/changes/@visactor/vtable/fix-column-dimension-null-empty-distinction_2026-01-04-11-03.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "comment": "fix: distinguish null and empty string values in column dimensions\n\n",
+      "type": "none",
+      "packageName": "@visactor/vtable"
+    }
+  ],
+  "packageName": "@visactor/vtable",
+  "email": "gongshiwei@kkgroup.cn"
+}
\ No newline at end of file
diff --git a/packages/vtable/src/layout/pivot-header-layout.ts b/packages/vtable/src/layout/pivot-header-layout.ts
index 1a3216597..518c20d60 100644
--- a/packages/vtable/src/layout/pivot-header-layout.ts
+++ b/packages/vtable/src/layout/pivot-header-layout.ts
@@ -2349,7 +2349,12 @@ export class PivotHeaderLayoutMap implements LayoutMapAPI {
       } = {};
       colHeaderPath.dimensionKey = colHeader.dimensionKey;
       colHeaderPath.indicatorKey = colHeader.indicatorKey;
-      colHeaderPath.value = colHeader.value ?? this.getIndicatorInfoByIndicatorKey(colHeader.indicatorKey)?.title ?? '';
+      // 如果value为null且没有indicatorKey时保持value为null（区分null和空字符串，防止单元格数据匹配不对）
+      colHeaderPath.value =
+        colHeader.value ??
+        (colHeader.indicatorKey
+          ? this.getIndicatorInfoByIndicatorKey(colHeader.indicatorKey)?.title ?? ''
+          : colHeader.value);
       colHeaderPath.virtual = colHeader.virtual;
       colHeaderPath.role = colHeader.role;
       headerPaths.colHeaderPaths!.push(colHeaderPath);