diff --git a/miniprogram/host-bridge/payment.js b/miniprogram/host-bridge/payment.js
index 0426a8bc4..f0fd71630 100644
--- a/miniprogram/host-bridge/payment.js
+++ b/miniprogram/host-bridge/payment.js
@@ -64,21 +64,8 @@ function resolvePayStatus(error) {
   return errCode === -2 || /cancel/i.test(errMsg) ? 'cancel' : 'fail';
 }
 
-function normalizePayError(error) {
-  if (!error) {
-    return '';
-  }
-  if (typeof error === 'string') {
-    return error;
-  }
-  try {
-    return JSON.stringify({
-      errCode: error.errCode,
-      errMsg: error.errMsg,
-    });
-  } catch (_error) {
-    return String(error.errMsg || error);
-  }
+function normalizePayError() {
+  return 'wechat payment unavailable';
 }
 
 function requestOrdinaryPayment(payParams) {
diff --git a/miniprogram/host-bridge/payment.test.js b/miniprogram/host-bridge/payment.test.js
index 3cb7f2a2f..5894ee779 100644
--- a/miniprogram/host-bridge/payment.test.js
+++ b/miniprogram/host-bridge/payment.test.js
@@ -125,10 +125,7 @@ describe('wechat-pay mini program payment bridge', () => {
       }),
     ).resolves.toEqual({
       status: 'cancel',
-      errorMessage: JSON.stringify({
-        errCode: -2,
-        errMsg: 'requestVirtualPayment:fail cancel',
-      }),
+      errorMessage: 'wechat payment unavailable',
     });
     expect(console.error).toHaveBeenCalledWith(
       '[wechat-pay] requestVirtualPayment failed',
@@ -136,6 +133,29 @@ describe('wechat-pay mini program payment bridge', () => {
     );
   });
 
+  test('hides ordinary payment native failure details from H5 result', async () => {
+    const { requestWechatPayment } = wechatPayBridge;
+    globalThis.wx.requestPayment.mockImplementationOnce((options) => {
+      options.fail?.({
+        errCode: 1001,
+        errMsg: 'requestPayment:fail private native detail',
+      });
+    });
+
+    await expect(
+      requestWechatPayment({
+        timeStamp: '1777110165',
+        nonceStr: 'nonce',
+        package: 'prepay_id=wx-prepay',
+        signType: 'RSA',
+        paySign: 'signature',
+      }),
+    ).resolves.toEqual({
+      status: 'fail',
+      errorMessage: 'wechat payment unavailable',
+    });
+  });
+
   test('notifies previous web-view after virtual payment', () => {
     const { notifyPreviousWebView } = wechatPayBridge;
     const previousPage = {
diff --git a/scripts/check-native-shells.mjs b/scripts/check-native-shells.mjs
index bcc3eaee5..494e8125d 100644
--- a/scripts/check-native-shells.mjs
+++ b/scripts/check-native-shells.mjs
@@ -1874,6 +1874,41 @@ function assertWechatMiniProgramCapabilityFlows() {
   }
 }
 
+function assertWechatPaymentResultBoundaries() {
+  const paymentSource = fs.readFileSync(
+    'miniprogram/host-bridge/payment.js',
+    'utf8',
+  );
+  const paymentTestSource = fs.readFileSync(
+    'miniprogram/host-bridge/payment.test.js',
+    'utf8',
+  );
+
+  for (const snippet of [
+    "function normalizePayError()",
+    "return 'wechat payment unavailable'",
+  ]) {
+    if (!paymentSource.includes(snippet)) {
+      throw new Error(`wechat payment bridge must include ${snippet}`);
+    }
+  }
+  if (
+    paymentSource.includes('JSON.stringify({\n      errCode') ||
+    paymentSource.includes('String(error.errMsg || error)')
+  ) {
+    throw new Error('wechat payment bridge must not expose native payment errors to H5');
+  }
+  for (const snippet of [
+    'maps virtual payment cancel errCode to cancel result',
+    'hides ordinary payment native failure details from H5 result',
+    "errorMessage: 'wechat payment unavailable'",
+  ]) {
+    if (!paymentTestSource.includes(snippet)) {
+      throw new Error(`wechat payment bridge test must include ${snippet}`);
+    }
+  }
+}
+
 function assertHostBridgeLayerLayout() {
   assertSameList(
     readDirectoryFileList(
@@ -2101,6 +2136,9 @@ assertWechatMiniProgramRouteParity();
 console.log('[check:native-shells] wechat-mini-program-capability-flows');
 assertWechatMiniProgramCapabilityFlows();
 
+console.log('[check:native-shells] wechat-payment-result-boundaries');
+assertWechatPaymentResultBoundaries();
+
 console.log('[check:native-shells] h5-host-bridge-event-subscription-gates');
 assertH5HostBridgeEventSubscriptionGates();