diff --git a/backend/internal/service/delivery.go b/backend/internal/service/delivery.go
index a8c498c..a4ae2f7 100644
--- a/backend/internal/service/delivery.go
+++ b/backend/internal/service/delivery.go
@@ -357,7 +357,16 @@ func (s *DeliveryService) submit(orderNo, gameAccount, bindUUID string, apiClien
 		s.markDeliverySubmissionFailed(claimed, apiClientID, deliveryStageBindMismatch, err.Error())
 		return nil, err
 	}
-	queueOrderID, err := s.createOrderQueue(goodID, order.OrderNo)
+	goodsNo := ""
+	goodsName := ""
+	if info != nil && info.Product != nil {
+		goodsNo = info.Product.SKU
+		goodsName = info.Product.Name
+	} else if openOrder != nil && openOrder.Product != nil {
+		goodsNo = openOrder.Product.SKU
+		goodsName = openOrder.Product.Name
+	}
+	queueOrderID, err := s.createOrderQueue(goodID, order.OrderNo, goodsNo)
 	if err != nil {
 		s.markDeliverySubmissionFailed(claimed, apiClientID, deliveryStageCreateQueue, err.Error())
 		return nil, err
@@ -369,7 +378,7 @@ func (s *DeliveryService) submit(orderNo, gameAccount, bindUUID string, apiClien
 	}); err != nil {
 		return nil, err
 	}
-	if err := s.patchOrderQueue(queueOrderID, gameAccount, bindUUID); err != nil {
+	if err := s.patchOrderQueue(queueOrderID, gameAccount, bindUUID, goodsNo, goodsName); err != nil {
 		s.markDeliverySubmissionFailed(claimed, apiClientID, deliveryStagePatchQueue, err.Error())
 		return nil, err
 	}
diff --git a/backend/internal/service/delivery_upstream.go b/backend/internal/service/delivery_upstream.go
index d8fa482..4faa72d 100644
--- a/backend/internal/service/delivery_upstream.go
+++ b/backend/internal/service/delivery_upstream.go
@@ -44,15 +44,20 @@ func (s *DeliveryService) accountBound(bindUUID, goodID string) (map[string]inte
 	return out.GameAccount, nil
 }
 
-func (s *DeliveryService) createOrderQueue(goodID, orderNo string) (string, error) {
+func (s *DeliveryService) createOrderQueue(goodID, orderNo, goodsNo string) (string, error) {
 	var out struct {
 		Orders []map[string]interface{} `json:"orders"`
 	}
-	if err := s.signProxy("/public/users/orders-queue", "POST", map[string]interface{}{
-		"good_id":  goodID,
-		"quantity": 1,
-		"order_sn": orderNo,
-	}, &out); err != nil {
+	payload := map[string]interface{}{
+		"good_id":   goodID,
+		"quantity":  1,
+		"order_sn":  orderNo,
+		"h5_prefix": s.channel,
+	}
+	if goodsNo != "" {
+		payload["goods_no"] = goodsNo
+	}
+	if err := s.signProxy("/public/users/orders-queue", "POST", payload, &out); err != nil {
 		return "", err
 	}
 	if len(out.Orders) == 0 {
@@ -65,13 +70,21 @@ func (s *DeliveryService) createOrderQueue(goodID, orderNo string) (string, erro
 	return orderID, nil
 }
 
-func (s *DeliveryService) patchOrderQueue(orderID, gameAccount, bindUUID string) error {
+func (s *DeliveryService) patchOrderQueue(orderID, gameAccount, bindUUID, goodsNo, goodsName string) error {
 	var out map[string]interface{}
-	return s.signProxy("/public/users/orders-queue", "PATCH", map[string]interface{}{
+	payload := map[string]interface{}{
 		"order_id":     orderID,
 		"game_account": gameAccount,
 		"bind_uuid":    bindUUID,
-	}, &out)
+		"h5_prefix":    s.channel,
+	}
+	if goodsNo != "" {
+		payload["goods_no"] = goodsNo
+	}
+	if goodsName != "" {
+		payload["goods_name"] = goodsName
+	}
+	return s.signProxy("/public/users/orders-queue", "PATCH", payload, &out)
 }
 
 func (s *DeliveryService) createUpstreamOrder(orderID, gameAccount, goodID, orderNo string) (map[string]interface{}, error) {
diff --git a/backend/internal/service/merchant_test.go b/backend/internal/service/merchant_test.go
index d2822b2..5819bf0 100644
--- a/backend/internal/service/merchant_test.go
+++ b/backend/internal/service/merchant_test.go
@@ -531,3 +531,42 @@ func TestUsernameCanBeReusedAfterMerchantAccountSoftDelete(t *testing.T) {
 		t.Fatalf("expected a new account record, got id=%d", recreated.ID)
 	}
 }
+
+// TestRemoveMemberDoesNotReleaseUsername 固化行为：商户侧"移除成员"只删除成员关系，
+// 登录账号（含用户名）保留，同名用户名仍被占用，无法新建。
+func TestRemoveMemberDoesNotReleaseUsername(t *testing.T) {
+	db := newServiceTestDB(t)
+	merchant := model.Merchant{Code: "remove-member-keep", Name: "移除成员保留账号", Status: model.MerchantStatusActive}
+	actor := model.User{Username: "remove-member-actor", PasswordHash: "hash", Role: model.RoleMerchant, Status: 1}
+	staff := model.User{Username: "kf-2", PasswordHash: "hash", Role: model.RoleMerchant, Status: 1}
+	for _, entity := range []interface{}{&merchant, &actor, &staff} {
+		if err := db.Create(entity).Error; err != nil {
+			t.Fatalf("create fixture: %v", err)
+		}
+	}
+	if err := createDefaultMerchantRoles(db, merchant.ID); err != nil {
+		t.Fatalf("create default roles: %v", err)
+	}
+
+	merchantSvc := NewMerchantService(db, nil, NewTenantService(db))
+	member, err := merchantSvc.AddMember(merchant.ID, AddMemberInput{
+		UserID: staff.ID,
+		Role:   model.MemberRoleOperator,
+	}, actor.ID)
+	if err != nil {
+		t.Fatalf("add member: %v", err)
+	}
+	if err := merchantSvc.RemoveMember(merchant.ID, member.ID, actor.ID); err != nil {
+		t.Fatalf("remove member: %v", err)
+	}
+
+	// 登录账号仍在（未被删除），用户名继续占用。
+	var kept model.User
+	if err := db.First(&kept, staff.ID).Error; err != nil {
+		t.Fatalf("login account should be retained after member removal: %v", err)
+	}
+	userSvc := NewUserService(db, nil)
+	if _, err := userSvc.Create("kf-2", "password123", "新员工", model.RoleMerchant, 0); err == nil {
+		t.Fatalf("username should still be occupied after member removal")
+	}
+}