diff --git a/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DeliveryOrderService.kt b/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DeliveryOrderService.kt
index efd51fd..d1eaede 100644
--- a/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DeliveryOrderService.kt
+++ b/src/main/java/com/ffii/fpsms/modules/deliveryOrder/service/DeliveryOrderService.kt
@@ -56,7 +56,7 @@ import net.sf.jasperreports.engine.JasperPrint
 import org.springframework.core.io.ClassPathResource
 import java.io.File
 import java.io.FileNotFoundException
-
+import com.ffii.core.support.JdbcDao;
 import com.ffii.fpsms.modules.deliveryOrder.entity.DoPickOrderRecord
 import com.ffii.fpsms.modules.deliveryOrder.entity.DoPickOrderRecordRepository
 import com.ffii.fpsms.modules.deliveryOrder.web.models.ExportDNLabelsRequest
@@ -96,6 +96,7 @@ open class DeliveryOrderService(
     private val inventoryLotService: InventoryLotService,
     private val suggestedPickLotRepository: SuggestPickLotRepository,
     private val inventoryLotRepository: InventoryLotRepository,
+    private val jdbcDao: JdbcDao,
 ) {
 
     open fun findByM18DataLogId(m18DataLogId: Long): DeliveryOrder? {
@@ -482,11 +483,59 @@ val truck = deliveryOrder.shop?.id?.let { shopId ->
     println("🔍 DEBUG: Looking for truck with shop ID: $shopId")
     val trucks = truckRepository.findByShopIdAndDeletedFalse(shopId)
     println("🔍 DEBUG: Found ${trucks.size} trucks for shop $shopId")
-    trucks.forEach { t ->
-        println("🔍 DEBUG: Truck ID: ${t.id}, DepartureTime: ${t.departureTime}")
+    
+    if (trucks.size <= 1) {
+        // 如果只有一个或没有 truck，直接返回
+        return@let trucks.firstOrNull()
+    }
+    
+    // ✅ 分析 DO order lines 中的 items 分布
+    val itemIds = deliveryOrder.deliveryOrderLines.mapNotNull { it.item?.id }.distinct()
+    println("🔍 DEBUG: Analyzing ${itemIds.size} unique items in DO order lines")
+    
+    // 使用 SQL 查询统计每个楼层的库存数量
+    val inventoryQuery = """
+        SELECT w.store_id as floor, COUNT(*) as inventory_count
+        FROM inventory_lot_line ill
+        JOIN inventory_lot il ON il.id = ill.inventoryLotId
+        JOIN warehouse w ON w.id = ill.warehouseId
+        WHERE il.itemId IN (${itemIds.joinToString(",")})
+          AND ill.deleted = false 
+          AND il.deleted = false 
+          AND w.deleted = false
+          AND ill.inQty > ill.outQty + COALESCE(ill.holdQty, 0)
+        GROUP BY w.store_id
+    """.trimIndent()
+    
+    val inventoryResults = jdbcDao.queryForList(inventoryQuery)
+    val floorInventoryCount = mutableMapOf<String, Int>()
+    
+    inventoryResults.forEach { row: Map<String, Any> ->
+        val floor = row["floor"] as? String ?: "Other"
+        val count = (row["inventory_count"] as? Number)?.toInt() ?: 0
+        floorInventoryCount[floor] = count
+    }
+    
+    println("🔍 DEBUG: Floor inventory distribution: $floorInventoryCount")
+    
+
+    // 决定使用哪个楼层
+    val preferredFloor = when {
+        floorInventoryCount["2F"] ?: 0 > floorInventoryCount["4F"] ?: 0 -> "2F"
+        floorInventoryCount["4F"] ?: 0 > floorInventoryCount["2F"] ?: 0 -> "4F"
+        else -> "2F" // 默认使用 2F
+    }
+    
+    println("🔍 DEBUG: Preferred floor based on inventory: $preferredFloor")
+    
+    // 根据楼层选择对应的 truck
+    val selectedTruck = when (preferredFloor) {
+        "2F" -> trucks.find { it.storeId == 2 }
+        "4F" -> trucks.find { it.storeId == 4 }
+        else -> trucks.minByOrNull { it.departureTime ?: LocalTime.MAX }
     }
-    val selectedTruck = trucks.minByOrNull { it.departureTime ?: LocalTime.MAX }
-    println("🔍 DEBUG: Selected truck: ID=${selectedTruck?.id}, DepartureTime=${selectedTruck?.departureTime}")
+    
+    println("🔍 DEBUG: Selected truck: ID=${selectedTruck?.id}, StoreId=${selectedTruck?.storeId}, DepartureTime=${selectedTruck?.departureTime}")
     selectedTruck
 }
 
diff --git a/src/main/java/com/ffii/fpsms/modules/stock/entity/InventoryLotLineRepository.kt b/src/main/java/com/ffii/fpsms/modules/stock/entity/InventoryLotLineRepository.kt
index 1379127..90fb34f 100644
--- a/src/main/java/com/ffii/fpsms/modules/stock/entity/InventoryLotLineRepository.kt
+++ b/src/main/java/com/ffii/fpsms/modules/stock/entity/InventoryLotLineRepository.kt
@@ -42,5 +42,5 @@ interface InventoryLotLineRepository : AbstractRepository<InventoryLotLine, Long
     fun findByInventoryLotStockInLineIdAndWarehouseId(inventoryLotStockInLineId: Long, warehouseId: Long): InventoryLotLine?
 
     fun findAllByInventoryLotItemIdAndStatus(itemId: Long, status: String): List<InventoryLotLine>
-    fun findAllByInventoryLotItemIdAndStatus(itemId: Long, status: InventoryLotLineStatus): List<InventoryLotLine>
+    fun findAllByInventoryLotItemIdAndStatus(itemId: Long, status: InventoryLotLineStatus): List<InventoryLotLine> 
 }
\ No newline at end of file
diff --git a/src/main/resources/db/changelog/changes/20251014_01_enson/01_altertable_enson.sql b/src/main/resources/db/changelog/changes/20251014_01_enson/01_altertable_enson.sql
new file mode 100644
index 0000000..df61bb5
--- /dev/null
+++ b/src/main/resources/db/changelog/changes/20251014_01_enson/01_altertable_enson.sql
@@ -0,0 +1,5 @@
+-- liquibase formatted sql
+-- changeset enson:altertable_warehouse
+
+ALTER TABLE warehouse 
+ADD COLUMN `store_id` varchar(50) default null;
\ No newline at end of file