diff --git a/backend/internal/modules/order/admin_actions.go b/backend/internal/modules/order/admin_actions.go
index 5602190..117e15a 100644
--- a/backend/internal/modules/order/admin_actions.go
+++ b/backend/internal/modules/order/admin_actions.go
@@ -7,16 +7,18 @@ import (
 	"hfb_sys/backend/internal/modules/notification"
 
 	"gorm.io/gorm"
-	"gorm.io/gorm/clause"
 )
 
 func (r *Repository) AdminClose(adminID uint64, orderID uint64, req AdminActionRequest, meta AuditMeta) error {
 	var refund *refundAction
 	err := r.db.Transaction(func(tx *gorm.DB) error {
-		order, listing, account, err := r.findOrderAssetsForAdminUpdate(tx, orderID)
+		assets, err := r.lockOrderAssets(tx, orderID)
 		if err != nil {
 			return err
 		}
+		order := assets.Order
+		listing := assets.Listing
+		account := assets.Account
 		if isTerminalStatus(order.Status) {
 			return ErrOrderCannotComplete
 		}
@@ -30,9 +32,7 @@ func (r *Repository) AdminClose(adminID uint64, orderID uint64, req AdminActionR
 		order.HandoffStatus = handoffStatusAdminClosed
 		order.SettlementStatus = settlementStatusClosed
 		order.SettledAt = &now
-		listing.Status = listingStatusOffline
-		listing.InTransaction = false
-		account.Status = accountStatusOffline
+		archiveAssets(listing, account)
 		if beforeOrderStatus != orderStatusPendingPayment {
 			totalCent := order.RentAmountCent + order.DepositAmountCent
 			action, err := r.prepareRefund(order, totalCent, refundBizAdminClose, "客服关闭订单原路退款")
@@ -97,10 +97,13 @@ func (r *Repository) AdminClose(adminID uint64, orderID uint64, req AdminActionR
 
 func (r *Repository) AdminMarkAbnormal(adminID uint64, orderID uint64, req AdminActionRequest, meta AuditMeta) error {
 	return r.db.Transaction(func(tx *gorm.DB) error {
-		order, listing, account, err := r.findOrderAssetsForAdminUpdate(tx, orderID)
+		assets, err := r.lockOrderAssets(tx, orderID)
 		if err != nil {
 			return err
 		}
+		order := assets.Order
+		listing := assets.Listing
+		account := assets.Account
 		if isTerminalStatus(order.Status) {
 			return ErrOrderCannotComplete
 		}
@@ -110,9 +113,7 @@ func (r *Repository) AdminMarkAbnormal(adminID uint64, orderID uint64, req Admin
 		beforeAccountStatus := account.Status
 		order.Status = orderStatusAbnormal
 		order.HandoffStatus = handoffStatusAdminAbnormal
-		listing.Status = listingStatusAbnormal
-		listing.InTransaction = false
-		account.Status = accountStatusAbnormal
+		markAssetsAbnormal(listing, account)
 		if err := notification.Append(tx,
 			notification.Entry{
 				UserID:  order.RenterID,
@@ -211,22 +212,6 @@ func (r *Repository) buildRefundStatusDTO(order *model.RentalOrder) *RefundStatu
 	}
 }
 
-func (r *Repository) findOrderAssetsForAdminUpdate(tx *gorm.DB, orderID uint64) (*model.RentalOrder, *model.RentalListing, *model.GameAccount, error) {
-	var order model.RentalOrder
-	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&order, orderID).Error; err != nil {
-		return nil, nil, nil, err
-	}
-	var listing model.RentalListing
-	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&listing, order.ListingID).Error; err != nil {
-		return nil, nil, nil, err
-	}
-	var account model.GameAccount
-	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&account, order.AccountID).Error; err != nil {
-		return nil, nil, nil, err
-	}
-	return &order, &listing, &account, nil
-}
-
 func isTerminalStatus(status string) bool {
 	return status == orderStatusCompleted || status == orderStatusCancelled || status == orderStatusClosed
 }
diff --git a/backend/internal/modules/order/assets.go b/backend/internal/modules/order/assets.go
new file mode 100644
index 0000000..5768df0
--- /dev/null
+++ b/backend/internal/modules/order/assets.go
@@ -0,0 +1,71 @@
+package order
+
+import (
+	"hfb_sys/backend/internal/model"
+
+	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
+)
+
+type orderAssets struct {
+	Order   *model.RentalOrder
+	Listing *model.RentalListing
+	Account *model.GameAccount
+}
+
+func (r *Repository) lockOrderAssets(tx *gorm.DB, orderID uint64) (*orderAssets, error) {
+	var order model.RentalOrder
+	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&order, orderID).Error; err != nil {
+		return nil, err
+	}
+	listing, account, err := r.lockListingAccountForOrder(tx, &order)
+	if err != nil {
+		return nil, err
+	}
+	return &orderAssets{
+		Order:   &order,
+		Listing: listing,
+		Account: account,
+	}, nil
+}
+
+func (r *Repository) lockListingAccountForOrder(tx *gorm.DB, order *model.RentalOrder) (*model.RentalListing, *model.GameAccount, error) {
+	var listing model.RentalListing
+	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&listing, order.ListingID).Error; err != nil {
+		return nil, nil, err
+	}
+	var account model.GameAccount
+	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&account, order.AccountID).Error; err != nil {
+		return nil, nil, err
+	}
+	return &listing, &account, nil
+}
+
+func reserveListingForOrder(listing *model.RentalListing) {
+	listing.InTransaction = true
+}
+
+func markAssetsRented(listing *model.RentalListing, account *model.GameAccount) {
+	listing.Status = listingStatusRented
+	account.Status = accountStatusRented
+}
+
+func releaseAssetsForRental(listing *model.RentalListing, account *model.GameAccount) {
+	listing.Status = listingStatusPublished
+	listing.InTransaction = false
+	account.Status = accountStatusPublished
+}
+
+func archiveAssets(listing *model.RentalListing, account *model.GameAccount) {
+	listing.Status = listingStatusOffline
+	listing.InTransaction = false
+	listing.PublishedAt = nil
+	account.Status = accountStatusOffline
+}
+
+func markAssetsAbnormal(listing *model.RentalListing, account *model.GameAccount) {
+	listing.Status = listingStatusAbnormal
+	listing.InTransaction = false
+	listing.PublishedAt = nil
+	account.Status = accountStatusAbnormal
+}
diff --git a/backend/internal/modules/order/checkout.go b/backend/internal/modules/order/checkout.go
index 65c5fae..91b8270 100644
--- a/backend/internal/modules/order/checkout.go
+++ b/backend/internal/modules/order/checkout.go
@@ -230,12 +230,8 @@ func (r *Repository) AcceptCheckout(userID uint64, orderID uint64) error {
 }
 
 func (r *Repository) finalizeCheckout(tx *gorm.DB, order *model.RentalOrder, checkout *model.OrderCheckout, renterContent string) (*refundAction, error) {
-	var listing model.RentalListing
-	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&listing, order.ListingID).Error; err != nil {
-		return nil, err
-	}
-	var account model.GameAccount
-	if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&account, order.AccountID).Error; err != nil {
+	listing, account, err := r.lockListingAccountForOrder(tx, order)
+	if err != nil {
 		return nil, err
 	}
 	now := time.Now()
@@ -244,7 +240,7 @@ func (r *Repository) finalizeCheckout(tx *gorm.DB, order *model.RentalOrder, che
 	order.SettlementStatus = settlementStatusSettled
 	order.SettledAt = &now
 	order.OwnerSettledAt = &now
-	archiveListingAfterCheckout(&listing, &account)
+	archiveAssets(listing, account)
 	orderID := order.ID
 	settlement := buildCheckoutSettlement(*order, checkout)
 
@@ -321,23 +317,15 @@ func (r *Repository) finalizeCheckout(tx *gorm.DB, order *model.RentalOrder, che
 	if err := tx.Save(checkout).Error; err != nil {
 		return nil, err
 	}
-	if err := tx.Save(&listing).Error; err != nil {
+	if err := tx.Save(listing).Error; err != nil {
 		return nil, err
 	}
-	if err := tx.Save(&account).Error; err != nil {
+	if err := tx.Save(account).Error; err != nil {
 		return nil, err
 	}
 	return refund, nil
 }
 
-// 完成后的账号先下架，避免已完成订单对应的账号重新出现在公开首页。
-func archiveListingAfterCheckout(listing *model.RentalListing, account *model.GameAccount) {
-	listing.Status = listingStatusOffline
-	listing.InTransaction = false
-	listing.PublishedAt = nil
-	account.Status = accountStatusOffline
-}
-
 func hasOpenCheckout(tx *gorm.DB, orderID uint64) (bool, error) {
 	var count int64
 	err := tx.Model(&model.OrderCheckout{}).
diff --git a/backend/internal/modules/order/lifecycle.go b/backend/internal/modules/order/lifecycle.go
index 21c4184..cf4bc4b 100644
--- a/backend/internal/modules/order/lifecycle.go
+++ b/backend/internal/modules/order/lifecycle.go
@@ -78,7 +78,7 @@ func (r *Repository) Create(renterID uint64, req CreateRequest) (*OrderDTO, erro
 		); err != nil {
 			return err
 		}
-		listing.InTransaction = true
+		reserveListingForOrder(&listing)
 		if err := tx.Save(&listing).Error; err != nil {
 			return err
 		}
@@ -135,10 +135,13 @@ func (r *Repository) Pay(userID uint64, orderID uint64) error {
 func (r *Repository) ConfirmPaidFromChannel(orderID uint64, providerBizNo string) error {
 	var newConvID uint64
 	err := r.db.Transaction(func(tx *gorm.DB) error {
-		var order model.RentalOrder
-		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&order, orderID).Error; err != nil {
+		assets, err := r.lockOrderAssets(tx, orderID)
+		if err != nil {
 			return err
 		}
+		order := assets.Order
+		listing := assets.Listing
+		account := assets.Account
 		if order.Status == orderStatusPendingHandoff || order.Status == orderStatusRenting {
 			return nil
 		}
@@ -146,25 +149,16 @@ func (r *Repository) ConfirmPaidFromChannel(orderID uint64, providerBizNo string
 			return ErrOrderCannotPay
 		}
 
-		var listing model.RentalListing
-		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&listing, order.ListingID).Error; err != nil {
-			return err
-		}
 		if listing.Status != listingStatusPublished || listing.ReviewStatus != listingReviewStatusApproved || !listing.InTransaction {
 			return ErrListingUnavailable
 		}
-		var account model.GameAccount
-		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&account, order.AccountID).Error; err != nil {
-			return err
-		}
 
 		// 租客已通过外部渠道付款，这里不写租客钱包流水。
 		orderID := order.ID
 		order.Status = orderStatusPendingHandoff
 		order.HandoffStatus = handoffStatusPendingOwner
-		listing.Status = listingStatusRented
-		account.Status = accountStatusRented
-		conv, err := chat.EnsureOrderConversation(tx, order)
+		markAssetsRented(listing, account)
+		conv, err := chat.EnsureOrderConversation(tx, *order)
 		if err != nil {
 			return err
 		}
@@ -189,13 +183,13 @@ func (r *Repository) ConfirmPaidFromChannel(orderID uint64, providerBizNo string
 		); err != nil {
 			return err
 		}
-		if err := tx.Save(&order).Error; err != nil {
+		if err := tx.Save(order).Error; err != nil {
 			return err
 		}
-		if err := tx.Save(&listing).Error; err != nil {
+		if err := tx.Save(listing).Error; err != nil {
 			return err
 		}
-		return tx.Save(&account).Error
+		return tx.Save(account).Error
 	})
 	if err != nil {
 		return err
@@ -218,12 +212,8 @@ func (r *Repository) Cancel(userID uint64, orderID uint64) error {
 		if order.Status != orderStatusPendingPayment && order.Status != orderStatusPendingHandoff {
 			return ErrOrderCannotCancel
 		}
-		var listing model.RentalListing
-		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&listing, order.ListingID).Error; err != nil {
-			return err
-		}
-		var account model.GameAccount
-		if err := tx.Clauses(clause.Locking{Strength: "UPDATE"}).First(&account, order.AccountID).Error; err != nil {
+		listing, account, err := r.lockListingAccountForOrder(tx, &order)
+		if err != nil {
 			return err
 		}
 
@@ -259,16 +249,14 @@ func (r *Repository) Cancel(userID uint64, orderID uint64) error {
 		); err != nil {
 			return err
 		}
-		listing.Status = listingStatusPublished
-		listing.InTransaction = false
-		account.Status = accountStatusPublished
+		releaseAssetsForRental(listing, account)
 		if err := tx.Save(&order).Error; err != nil {
 			return err
 		}
-		if err := tx.Save(&listing).Error; err != nil {
+		if err := tx.Save(listing).Error; err != nil {
 			return err
 		}
-		return tx.Save(&account).Error
+		return tx.Save(account).Error
 	})
 	if err != nil {
 		return err
diff --git a/backend/internal/modules/order/repository_test.go b/backend/internal/modules/order/repository_test.go
index e08274b..53ebca4 100644
--- a/backend/internal/modules/order/repository_test.go
+++ b/backend/internal/modules/order/repository_test.go
@@ -140,14 +140,29 @@ func TestCalculateDepositWaiverUsesSharedRemainingQuota(t *testing.T) {
 	}
 }
 
-func TestArchiveListingAfterCheckoutMovesListingOffline(t *testing.T) {
-	// This test is purely for contract documentation; no behavior is tested yet.
-	// When implementing auto-archive behavior:
-	// - Call should succeed for renting/overdue/pending_checkout_confirm/pending_checkout_accept orders
-	// - Listing status should be set to "archived" or "offline"
-	// - In-transaction flag should be cleared
-	// - Order should enter completed or closed state
-	_ = time.Now()
+func TestArchiveAssetsMovesListingOffline(t *testing.T) {
+	now := time.Now()
+	listing := model.RentalListing{
+		Status:        listingStatusRented,
+		InTransaction: true,
+		PublishedAt:   &now,
+	}
+	account := model.GameAccount{Status: accountStatusRented}
+
+	archiveAssets(&listing, &account)
+
+	if listing.Status != listingStatusOffline {
+		t.Fatalf("listing.Status = %q, want %q", listing.Status, listingStatusOffline)
+	}
+	if listing.InTransaction {
+		t.Fatal("listing.InTransaction = true, want false")
+	}
+	if listing.PublishedAt != nil {
+		t.Fatal("listing.PublishedAt is not nil")
+	}
+	if account.Status != accountStatusOffline {
+		t.Fatalf("account.Status = %q, want %q", account.Status, accountStatusOffline)
+	}
 }
 
 func TestNewOrderNoUsesShanghaiTimeWhenLocalIsUTC(t *testing.T) {