diff --git a/services/wallet-service/internal/service/wallet/service.go b/services/wallet-service/internal/service/wallet/service.go
index 5271cf86..99387511 100644
--- a/services/wallet-service/internal/service/wallet/service.go
+++ b/services/wallet-service/internal/service/wallet/service.go
@@ -565,7 +565,7 @@ func (s *Service) ConfirmGooglePayment(ctx context.Context, command ledger.Googl
 	if product.Platform != ledger.RechargeProductPlatformAndroid || product.Channel != ledger.RechargeChannelGoogle {
 		return ledger.GooglePaymentReceipt{}, xerr.New(xerr.InvalidArgument, "recharge product is not google play product")
 	}
-	if command.ProductCode != "" && command.ProductCode != product.ProductCode {
+	if command.ProductCode != "" && command.ProductCode != product.ProductName {
 		return ledger.GooglePaymentReceipt{}, xerr.New(xerr.Conflict, "product_code does not match")
 	}
 	if !rechargeProductSupportsRegion(product, command.RegionID) {
@@ -585,7 +585,7 @@ func (s *Service) ConfirmGooglePayment(ctx context.Context, command ledger.Googl
 	if purchase.PurchaseState != ledger.GooglePurchaseStatePurchased {
 		return ledger.GooglePaymentReceipt{}, xerr.New(xerr.Conflict, "google purchase is not purchased")
 	}
-	if purchase.ProductID != "" && purchase.ProductID != product.ProductCode {
+	if purchase.ProductID != "" && purchase.ProductID != product.ProductName {
 		return ledger.GooglePaymentReceipt{}, xerr.New(xerr.Conflict, "google product_id does not match recharge product")
 	}
 	if command.OrderID != "" && purchase.OrderID != "" && command.OrderID != purchase.OrderID {
diff --git a/services/wallet-service/internal/service/wallet/service_test.go b/services/wallet-service/internal/service/wallet/service_test.go
index f0965f0a..e3f504ff 100644
--- a/services/wallet-service/internal/service/wallet/service_test.go
+++ b/services/wallet-service/internal/service/wallet/service_test.go
@@ -2134,6 +2134,63 @@ func TestRechargeProductsAreConfiguredByPlatformRegionAndStatus(t *testing.T) {
 	}
 }
 
+// TestConfirmGooglePaymentUsesProductNameAsGoogleProductID 锁定后台 product_name 作为 Google Play 商品 ID。
+func TestConfirmGooglePaymentUsesProductNameAsGoogleProductID(t *testing.T) {
+	repository := mysqltest.NewRepository(t)
+	svc := walletservice.New(repository)
+	const googleProductID = "coins_1500_google"
+	product, err := svc.CreateRechargeProduct(context.Background(), ledger.RechargeProductCommand{
+		AppCode:        "lalu",
+		AmountMicro:    1500000,
+		CoinAmount:     1500,
+		ProductName:    googleProductID,
+		Description:    "google coin pack",
+		Platform:       ledger.RechargeProductPlatformAndroid,
+		RegionIDs:      []int64{1001},
+		Enabled:        true,
+		OperatorUserID: 90001,
+	})
+	if err != nil {
+		t.Fatalf("CreateRechargeProduct failed: %v", err)
+	}
+	if product.ProductCode == googleProductID {
+		t.Fatalf("test requires internal product_code to differ from Google product ID: %+v", product)
+	}
+	svc.SetGooglePlayClient(&fakeGooglePlayClient{
+		purchase: ledger.GooglePlayPurchase{
+			ProductID:            googleProductID,
+			OrderID:              "GPA.1",
+			PurchaseState:        ledger.GooglePurchaseStatePurchased,
+			ConsumptionState:     "CONSUMPTION_STATE_YET_TO_BE_CONSUMED",
+			AcknowledgementState: "ACKNOWLEDGEMENT_STATE_ACKNOWLEDGED",
+		},
+	})
+
+	receipt, err := svc.ConfirmGooglePayment(context.Background(), ledger.GooglePaymentCommand{
+		AppCode:       "lalu",
+		CommandID:     "google-pay-product-name",
+		UserID:        53001,
+		RegionID:      1001,
+		ProductID:     product.ProductID,
+		ProductCode:   googleProductID,
+		PackageName:   "com.org.laluparty",
+		PurchaseToken: "purchase-token-product-name",
+		OrderID:       "GPA.1",
+	})
+	if err != nil {
+		t.Fatalf("ConfirmGooglePayment failed: %v", err)
+	}
+	if receipt.Status != ledger.PaymentStatusCredited || receipt.CoinAmount != 1500 || receipt.ProductCode != product.ProductCode {
+		t.Fatalf("google payment receipt mismatch: %+v", receipt)
+	}
+	if got := repository.CountRows("payment_orders", "product_id = ? AND product_code = ?", product.ProductID, product.ProductCode); got != 1 {
+		t.Fatalf("google payment should write one payment order with internal product_code, got %d", got)
+	}
+	if got := repository.CountRows("wallet_entries", "transaction_id = ?", receipt.TransactionID); got != 1 {
+		t.Fatalf("google payment should write one wallet entry, got %d", got)
+	}
+}
+
 func TestApplyGameCoinChangeDebitCreditAndIdempotency(t *testing.T) {
 	repository := mysqltest.NewRepository(t)
 	repository.SetBalance(88001, 500)
@@ -2283,3 +2340,25 @@ func (f *fakeActivityBadgeClient) ConsumeAchievementEvent(_ context.Context, req
 	}
 	return &activityv1.ConsumeAchievementEventResponse{EventId: req.GetEventId(), Status: status}, nil
 }
+
+type fakeGooglePlayClient struct {
+	purchase ledger.GooglePlayPurchase
+	err      error
+	consumed []string
+}
+
+func (f *fakeGooglePlayClient) GetProductPurchase(_ context.Context, packageName string, purchaseToken string) (ledger.GooglePlayPurchase, error) {
+	if f.err != nil {
+		return ledger.GooglePlayPurchase{}, f.err
+	}
+	purchase := f.purchase
+	if purchase.PackageName == "" {
+		purchase.PackageName = packageName
+	}
+	return purchase, nil
+}
+
+func (f *fakeGooglePlayClient) ConsumeProduct(_ context.Context, _ string, productID string, _ string) error {
+	f.consumed = append(f.consumed, productID)
+	return nil
+}