diff --git a/order/src/main/java/com/baiyue/order/service/UnifiedOrderQueryService.java b/order/src/main/java/com/baiyue/order/service/UnifiedOrderQueryService.java
index 38851b385..0d5ab84d4 100644
--- a/order/src/main/java/com/baiyue/order/service/UnifiedOrderQueryService.java
+++ b/order/src/main/java/com/baiyue/order/service/UnifiedOrderQueryService.java
@@ -306,7 +306,8 @@ public class UnifiedOrderQueryService {
             order.getCustomerId(), order.getCustomerName(),
             order.getChannelCode(), order.getChannelName(), Boolean.TRUE.equals(order.getChannelChanged()), order.getReceivingWarehouseId(), order.getReceivingWarehouseName(),
             order.getDestinationWarehouseId(), order.getDestinationWarehouseName(), inbound.id(), inbound.version(), inbound.inboundCode(),
-            order.getExpectedShipDate(), displayedPackageCount(order, cargo, inbound), null, inbound.locationCodes(),
+            order.getExpectedShipDate(), displayedPackageCount(order, cargo, inbound), null,
+            distinctLocationCodes(inbound.locationCodes()),
             order.getEstimatedVolumeCbm(), volumeCbm(cargo),
             inbound.actualGrossWeightKg(), inbound.actualVolumeCbm(),
             order.getExpectedArrivalAt() != null ? order.getExpectedArrivalAt() : inbound.expectedArrivalAt(), inbound.feeReviewStatus(),
@@ -333,7 +334,7 @@ public class UnifiedOrderQueryService {
             order != null && Boolean.TRUE.equals(order.getChannelChanged()), inbound.warehouseId(),
             inbound.warehouseName(), inbound.deliveryWarehouseId(), inbound.deliveryWarehouseName(),
             inbound.id(), inbound.version(), inbound.inboundCode(), null,
-            displayedPackageCount(order, cargo, inbound), null, inbound.locationCodes(),
+            displayedPackageCount(order, cargo, inbound), null, distinctLocationCodes(inbound.locationCodes()),
             order == null ? null : order.getEstimatedVolumeCbm(), volumeCbm(cargo),
             inbound.actualGrossWeightKg(), inbound.actualVolumeCbm(),
             order != null && order.getExpectedArrivalAt() != null ? order.getExpectedArrivalAt() : inbound.expectedArrivalAt(), inbound.feeReviewStatus(), inbound.companyName(),
@@ -408,6 +409,13 @@ public class UnifiedOrderQueryService {
         return values.isEmpty() ? null : String.join(", ", values);
     }
 
+    private String distinctLocationCodes(String locationCodes) {
+        if (!StringUtils.hasText(locationCodes)) return null;
+        LinkedHashSet<String> values = new LinkedHashSet<>(List.of(
+            StringUtils.tokenizeToStringArray(locationCodes, ",，、")));
+        return values.isEmpty() ? null : String.join("、", values);
+    }
+
     private Integer totalQuantity(CargoSummary cargo) {
         return cargo == null ? null : cargo.totalQuantity();
     }
diff --git a/order/src/main/resources/openapi/order-v1.yaml b/order/src/main/resources/openapi/order-v1.yaml
index ac03e9b7b..89cbee885 100644
--- a/order/src/main/resources/openapi/order-v1.yaml
+++ b/order/src/main/resources/openapi/order-v1.yaml
@@ -752,7 +752,7 @@ components:
         expectedShipDate: {type: string, format: date, nullable: true}
         totalPackageCount: {type: integer, nullable: true, description: 无入仓事实时为当前订单有效货物箱数合计；存在入仓业务单元后为该单元履约总箱数，拆分后不以父单原始箱数覆盖}
         recommendedPalletType: {type: string, nullable: true, description: 当前无列表级权威事实时返回 null，不得返回固定托盘类型}
-        locationCodes: {type: string, nullable: true}
+        locationCodes: {type: string, nullable: true, description: "库位编码汇总；按首次出现顺序去重并使用中文顿号分隔"}
         estimatedVolumeCbm: {type: number, nullable: true, description: 平台运营填写的预估体积，不得与客户下单或实测体积混用}
         expectedVolumeCbm: {type: number, nullable: true, description: Order 客户下单货物体积合计，不得与平台预估或实测体积混用}
         actualGrossWeightKg: {type: number, nullable: true, description: 仅 Firstleg 实测毛重；无实测时返回 null}
diff --git a/order/src/test/java/com/baiyue/order/service/UnifiedOrderQueryServiceTest.java b/order/src/test/java/com/baiyue/order/service/UnifiedOrderQueryServiceTest.java
index 299527428..5f11ea806 100644
--- a/order/src/test/java/com/baiyue/order/service/UnifiedOrderQueryServiceTest.java
+++ b/order/src/test/java/com/baiyue/order/service/UnifiedOrderQueryServiceTest.java
@@ -487,7 +487,7 @@ class UnifiedOrderQueryServiceTest {
             assertThat(row.inboundCode()).isEqualTo("RK-77");
             assertThat(row.channelCode()).isEqualTo("MATSON");
             assertThat(row.recommendedPalletType()).isNull();
-            assertThat(row.locationCodes()).isEqualTo("A0-01, B2-03");
+            assertThat(row.locationCodes()).isEqualTo("A0-01、B2-03");
             assertThat(row.companyName()).isEqualTo("测试客户有限公司");
             assertThat(row.businessType()).isEqualTo("SEA_LCL");
             assertThat(row.totalPalletCount()).isEqualTo(2);
@@ -512,6 +512,19 @@ class UnifiedOrderQueryServiceTest {
         assertThat(row.totalNetWeightKg()).isNull();
     }
 
+    @Test
+    void unifiedRowDeduplicatesLocationCodesInFirstSeenOrder() {
+        UnifiedOrderQuery query = query("INBOUNDED");
+        var summary = summary("INBOUNDED", null);
+        when(summary.inbound().locationCodes()).thenReturn("A0、 A0, A0，A0");
+        when(firstleg.page(eq("internal-token"), any())).thenReturn(
+            ApiResponse.success(new PageResult<>(List.of(summary), 1, 20, 1, 1)));
+
+        var row = service.page(null, query).records().get(0);
+
+        assertThat(row.locationCodes()).isEqualTo("A0");
+    }
+
     @Test
     void waitSplitFilterForwardsAndReturnsWaitSplitIndependently() {
         UnifiedOrderQuery query = query("WAIT_SPLIT");