diff --git a/common/changes/@visactor/vchart/fix-crosshari-defaultSelect-axisIndex_2025-04-09-07-30.json b/common/changes/@visactor/vchart/fix-crosshari-defaultSelect-axisIndex_2025-04-09-07-30.json
new file mode 100644
index 0000000000..9fc64e1e92
--- /dev/null
+++ b/common/changes/@visactor/vchart/fix-crosshari-defaultSelect-axisIndex_2025-04-09-07-30.json
@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "comment": "fix: when set defaultSelect of crosshair, `axisIndex` should have a default value: 0\n\n",
+      "type": "none",
+      "packageName": "@visactor/vchart"
+    }
+  ],
+  "packageName": "@visactor/vchart",
+  "email": "dingling112@gmail.com"
+}
\ No newline at end of file
diff --git a/packages/vchart/src/component/crosshair/base.ts b/packages/vchart/src/component/crosshair/base.ts
index df76fa4658..ba226ca93f 100644
--- a/packages/vchart/src/component/crosshair/base.ts
+++ b/packages/vchart/src/component/crosshair/base.ts
@@ -162,7 +162,7 @@ export abstract class BaseCrossHair<T extends ICartesianCrosshairSpec | IPolarCr
       const fieldSpec = (this._spec as any)[field];
 
       if (fieldSpec && fieldSpec.visible && fieldSpec.defaultSelect) {
-        const { axisIndex, datum } = fieldSpec.defaultSelect;
+        const { axisIndex = 0, datum } = fieldSpec.defaultSelect;
         const axis = this._option.getComponentsByKey('axes').find(c => c.getSpecIndex() === axisIndex) as IAxis;
 
         if (axis) {