diff --git a/src/main/java/com/heai/modules/production/dao/DailyPlanMapper.java b/src/main/java/com/heai/modules/production/dao/DailyPlanMapper.java
index fc2b8ad..bb01019 100644
--- a/src/main/java/com/heai/modules/production/dao/DailyPlanMapper.java
+++ b/src/main/java/com/heai/modules/production/dao/DailyPlanMapper.java
@@ -56,6 +56,10 @@ public interface DailyPlanMapper {
      * @throws:
     */
     List<ShopOrderData> getShopOrderList(DailyPlanInData dailyPlanInData);
+
+    /** PDA 生产退库：仅按生产订单号查询（同号多工厂取 ENTERDATE 最新一条）- rqrq */
+    ShopOrderData getShopOrderByOrderNoForReturn(@Param("orderNo") String orderNo);
+
     /**
      * @Method
      * @Description: 获取混炼任务信息
diff --git a/src/main/java/com/heai/modules/production/entity/ShopOrderForReturnScanData.java b/src/main/java/com/heai/modules/production/entity/ShopOrderForReturnScanData.java
index 361022b..0e36b66 100644
--- a/src/main/java/com/heai/modules/production/entity/ShopOrderForReturnScanData.java
+++ b/src/main/java/com/heai/modules/production/entity/ShopOrderForReturnScanData.java
@@ -5,7 +5,7 @@ import lombok.Data;
 import java.io.Serializable;
 
 /**
- * 生产退库：扫派工单/混炼任务单统一入口 - rqrq
+ * PDA 生产退库：`orderStr` —分号分段第 4 段 SeqNo / 纯整数 SeqNo / 纯文本订单号（无混炼任务单扫码）- rqrq
  *
  * @author rqrq
  */
@@ -13,7 +13,7 @@ import java.io.Serializable;
 public class ShopOrderForReturnScanData implements Serializable {
 
     /**
-     * 扫到的内容：纯数字为派工单 SeqNo；HL 开头为混炼任务单（待扩展）
+     * 扫描内容 - rqrq
      */
     private String orderStr;
 }
diff --git a/src/main/java/com/heai/modules/production/service/impl/DailyPlanServiceImpl.java b/src/main/java/com/heai/modules/production/service/impl/DailyPlanServiceImpl.java
index 06521cf..523b941 100644
--- a/src/main/java/com/heai/modules/production/service/impl/DailyPlanServiceImpl.java
+++ b/src/main/java/com/heai/modules/production/service/impl/DailyPlanServiceImpl.java
@@ -870,7 +870,7 @@ public class DailyPlanServiceImpl implements DailyPlanService {
     }
 
     /**
-     * @Description PDA 生产退库扫码：纯数字→派工单 SeqNo；HL 开头→混炼任务单 TaskNo 查 Hunlian_TaskHeader.orderRef1 再走生产订单 - rqrq
+     * @Description PDA 生产退库扫码：①含分号取第 4 段 SeqNo；②整段整数为 SeqNo；③否则按生产订单号查询（无混炼任务单扫码）- rqrq
      */
     @Override
     public ShopOrderData getShopOrderForReturnByScan(ShopOrderForReturnScanData scan) {
@@ -878,23 +878,53 @@ public class DailyPlanServiceImpl implements DailyPlanService {
             throw new RuntimeException("扫描内容不能为空");
         }
         String raw = scan.getOrderStr().trim();
-        if (isAllDigitsDispatchOrder(raw)) {
-            DailyPlanInData dailyPlanInData = new DailyPlanInData();
-            try {
-                dailyPlanInData.setSeqNo(Integer.parseInt(raw));
-            } catch (NumberFormatException e) {
-                throw new RuntimeException("派工单号格式错误");
+
+        if (raw.contains(";")) {
+            String[] parts = raw.split(";", -1);
+            if (parts.length < 4) {
+                throw new RuntimeException("扫码格式错误（分号分段不足）");
+            }
+            Integer seqNoFromQr = parseIntegerSeqNo(parts[3]);
+            if (seqNoFromQr == null) {
+                throw new RuntimeException("扫码第4段派工单序号格式错误");
             }
-            dailyPlanInData.setRemark("生产退库");
-            return getShopOrderForReturn(dailyPlanInData);
+            DailyPlanInData dispatchData = new DailyPlanInData();
+            dispatchData.setSeqNo(seqNoFromQr);
+            dispatchData.setRemark("生产退库");
+            return getShopOrderForReturn(dispatchData);
         }
-        if (raw.toUpperCase().startsWith("HL")) {
-            HunlianData hl = new HunlianData();
-            hl.setTaskNo(raw);
-            return getShopOrderForHunlianTask(hl);
+
+        Integer directSeqNo = parseIntegerSeqNo(raw);
+        if (directSeqNo != null) {
+            DailyPlanInData dispatchData = new DailyPlanInData();
+            dispatchData.setSeqNo(directSeqNo);
+            dispatchData.setRemark("生产退库");
+            return getShopOrderForReturn(dispatchData);
+        }
+
+        ShopOrderData byOrderOnly = dailyPlanMapper.getShopOrderByOrderNoForReturn(raw);
+        if (byOrderOnly == null || !StringUtils.hasText(byOrderOnly.getOrderNo())) {
+            throw new RuntimeException("该生产订单不存在");
         }
+        return byOrderOnly;
+    }
 
-        throw new RuntimeException("只能扫派工单和混炼任务单二维码");
+    /**
+     * 仅识别非空十进制整数（派工单 SeqNo）；含字母/小数等返回 null - rqrq
+     */
+    private static Integer parseIntegerSeqNo(String part) {
+        if (!StringUtils.hasText(part)) {
+            return null;
+        }
+        String t = part.trim();
+        if (!isAllDigitsDispatchOrder(t)) {
+            return null;
+        }
+        try {
+            return Integer.parseInt(t);
+        } catch (NumberFormatException e) {
+            return null;
+        }
     }
 
     private static boolean isAllDigitsDispatchOrder(String s) {
diff --git a/src/main/resources/mapper/production/DailyPlanMapper.xml b/src/main/resources/mapper/production/DailyPlanMapper.xml
index a52632b..4e84f94 100644
--- a/src/main/resources/mapper/production/DailyPlanMapper.xml
+++ b/src/main/resources/mapper/production/DailyPlanMapper.xml
@@ -140,6 +140,24 @@
             </if>
         </where>
     </select>
+
+    <!-- rqrq - PDA 生产退库扫码为纯订单号时：不送 site，多行取 TOP 1 -->
+    <select id="getShopOrderByOrderNoForReturn" resultType="com.heai.modules.production.entity.ShopOrderData">
+        select top 1
+                A.OrderNo ,A.Site ,A.EnterDate ,A.UserName ,A.NeedDate ,A.OriginalNeedDate ,A.PlanStartDate ,A.ReleaseDate
+                ,A.ReleaseGuys ,A.ScheduleDate ,A.Scheduler ,A.IssueDate ,A.ReportDate ,A.ReceiveDate ,A.CloseDate
+                ,A.Planner ,A.Status ,A.Status_Tmp ,A.Printed ,A.OrderType ,A.PartNo ,A.LotSize ,A.FinishedQty
+                ,A.ProjectID ,A.BOMRevNo ,A.RoutingRevNo ,A.Leadtime ,A.Remark ,A.OrderRef1 ,A.OrderRef2 ,A.CostRollUpFlag
+                ,A.ManualFlag ,A.OriSOOrderNo ,A.CustomerID ,A.TechInfo ,A.ReceiveStatus ,A.E_OriginalOrderNo
+                ,A.E_Levels ,A.E_OriginalOrderType ,A.E_SeqNo ,A.E_LevelCode ,A.SFDCReportedFlag ,A.RepairSOFlag
+                ,A.ConfigurationFlag ,A.MaterialSplitFlag ,A.ObjectVersion ,A.ExpandFlag ,A.CodeNo ,A.LE_SeqNo
+                ,A.LE_ItemNo ,A.LE_Levels
+                ,B.PartDescription
+        from ShopOrder A
+                 left join Part B on A.site = B.site and A.PartNo = B.PartNo
+        where A.OrderNo = #{orderNo,jdbcType=VARCHAR}
+        order by A.EnterDate desc
+    </select>
     <select id="getTransfer" resultType="com.heai.modules.production.entity.ShopOrderData">
         select a.TransNo as transFerNo ,b.PartNo,c.PartDescription,a.Status,b.TransQty as lotSize,b.ConfirmQty as FinishedQty,a.Site, b.OrderNo,dbo.Get_PartWeightFactorForReport(A.Site ,b.PartNo,b.OrderNo) as weightFactor,
         dbo.Get_Part_DefaultWarehouseID(a.Site,b.PartNo) DefaultWarehouseID,b.seqNo,a.needReceiveFlag,Round(isnull(b.boxWeight,0),2) boxWeight