diff --git a/mhd_wms/src/main/java/com/mhd/wms/application/service/signature/SignatureAutoTaskService.java b/mhd_wms/src/main/java/com/mhd/wms/application/service/signature/SignatureAutoTaskService.java
new file mode 100644
index 000000000..d85968fe9
--- /dev/null
+++ b/mhd_wms/src/main/java/com/mhd/wms/application/service/signature/SignatureAutoTaskService.java
@@ -0,0 +1,84 @@
+package com.mhd.wms.application.service.signature;
+
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
+import com.mhd.wms.domain.stockInOrder.entity.StockInOrder;
+import com.mhd.wms.domain.stockInOrder.repository.facade.IStockInOrderService;
+import com.mhd.wms.domain.stockOutOrder.entity.StockOutOrder;
+import com.mhd.wms.domain.stockOutOrder.repository.facade.IStockOutOrderService;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+import java.util.List;
+import java.util.stream.Collectors;
+
+/**
+ * 签名自动任务：超过上架时间/出库交接时间 24 小时的订单自动设为已签名
+ */
+@Slf4j
+@Service
+public class SignatureAutoTaskService {
+
+    @Autowired
+    private IStockInOrderService stockInOrderService;
+    @Autowired
+    private IStockOutOrderService stockOutOrderService;
+
+    /** 每30分钟执行一次 */
+    @Scheduled(fixedDelay = 1800000)
+    public void autoSignature() {
+        Date cutoffTime = new Date(System.currentTimeMillis() - 24 * 60 * 60 * 1000L);
+        int inCount = autoSignInOrders(cutoffTime);
+        int outCount = autoSignOutOrders(cutoffTime);
+        if (inCount > 0 || outCount > 0) {
+            log.info("签名自动任务完成 - 入库签名：{}条，出库签名：{}条", inCount, outCount);
+        }
+    }
+
+    /**
+     * 入库单自动签名：completionTime 超过 24h 且 signatureStatus=1(待签名) 的设为已签名
+     */
+    private int autoSignInOrders(Date cutoffTime) {
+        List<StockInOrder> list = stockInOrderService.list(
+                new LambdaQueryWrapper<StockInOrder>()
+                        .eq(StockInOrder::getSignatureStatus, 1)
+                        .eq(StockInOrder::getStatus, 5)
+                        .lt(StockInOrder::getCompletionTime, cutoffTime)
+                        .isNotNull(StockInOrder::getCompletionTime)
+        );
+        if (list.isEmpty()) return 0;
+        List<Long> ids = list.stream().map(StockInOrder::getInOrderId).collect(Collectors.toList());
+        stockInOrderService.update(new LambdaUpdateWrapper<StockInOrder>()
+                .in(StockInOrder::getInOrderId, ids)
+                .set(StockInOrder::getSignatureStatus, 2)
+                .set(StockInOrder::getSignatureTime, new Date())
+                .set(StockInOrder::getSignatureRemark, "系统自动签名：上架完成超过24小时")
+        );
+        return ids.size();
+    }
+
+    /**
+     * 出库单自动签名：completeTime 超过 24h 且 signatureStatus=1(待签名) 的设为已签名
+     */
+    private int autoSignOutOrders(Date cutoffTime) {
+        List<StockOutOrder> list = stockOutOrderService.list(
+                new LambdaQueryWrapper<StockOutOrder>()
+                        .eq(StockOutOrder::getSignatureStatus, 1)
+                        .eq(StockOutOrder::getStatus, 9)
+                        .lt(StockOutOrder::getCompleteTime, cutoffTime)
+                        .isNotNull(StockOutOrder::getCompleteTime)
+        );
+        if (list.isEmpty()) return 0;
+        List<Long> ids = list.stream().map(StockOutOrder::getOutOrderId).collect(Collectors.toList());
+        stockOutOrderService.update(new LambdaUpdateWrapper<StockOutOrder>()
+                .in(StockOutOrder::getOutOrderId, ids)
+                .set(StockOutOrder::getSignatureStatus, 2)
+                .set(StockOutOrder::getSignatureTime, new Date())
+                .set(StockOutOrder::getSignatureRemark, "系统自动签名：出库交接完成超过24小时")
+        );
+        return ids.size();
+    }
+}
diff --git a/mhd_wms/src/main/java/com/mhd/wms/application/service/stockInOrder/StockInOrderApplicationService.java b/mhd_wms/src/main/java/com/mhd/wms/application/service/stockInOrder/StockInOrderApplicationService.java
index a36cd4c49..1317e2e1b 100644
--- a/mhd_wms/src/main/java/com/mhd/wms/application/service/stockInOrder/StockInOrderApplicationService.java
+++ b/mhd_wms/src/main/java/com/mhd/wms/application/service/stockInOrder/StockInOrderApplicationService.java
@@ -2816,4 +2816,27 @@ public class StockInOrderApplicationService {
         }
         stockInOrderService.updateById(entity);
     }
+
+    /**
+     * PDA批量入库签名
+     */
+    public AjaxResult batchSignature(com.mhd.wms.interfaces.dto.signature.BatchSignatureDTO dto) {
+        List<Long> inOrderIds = dto.getInOrderIds();
+        if (inOrderIds == null || inOrderIds.isEmpty()) {
+            return AjaxResult.error("请选择需要签名的入库单");
+        }
+        int success = 0;
+        Date now = new Date();
+        for (Long id : inOrderIds) {
+            StockInOrder entity = new StockInOrder();
+            entity.setInOrderId(id);
+            entity.setSignatureStatus(dto.getSignatureStatus() != null ? dto.getSignatureStatus() : 2);
+            entity.setSignatureTime(dto.getSignatureTime() != null ? dto.getSignatureTime() : now);
+            entity.setSignaturePic(dto.getSignaturePic());
+            entity.setSignatureRemark(dto.getSignatureRemark());
+            stockInOrderService.updateById(entity);
+            success++;
+        }
+        return AjaxResult.success("批量签名成功，共" + success + "条");
+    }
 }
\ No newline at end of file
diff --git a/mhd_wms/src/main/java/com/mhd/wms/application/service/stockOutOrder/StockOutOrderApplicationService.java b/mhd_wms/src/main/java/com/mhd/wms/application/service/stockOutOrder/StockOutOrderApplicationService.java
index c958b72a8..297257d60 100644
--- a/mhd_wms/src/main/java/com/mhd/wms/application/service/stockOutOrder/StockOutOrderApplicationService.java
+++ b/mhd_wms/src/main/java/com/mhd/wms/application/service/stockOutOrder/StockOutOrderApplicationService.java
@@ -2089,4 +2089,27 @@ public class StockOutOrderApplicationService {
         stockOutOrderService.updateById(entity);
     }
 
+    /**
+     * PDA批量出库签名
+     */
+    public AjaxResult batchSignature(com.mhd.wms.interfaces.dto.signature.BatchSignatureDTO dto) {
+        List<Long> outOrderIds = dto.getOutOrderIds();
+        if (outOrderIds == null || outOrderIds.isEmpty()) {
+            return AjaxResult.error("请选择需要签名的出库单");
+        }
+        int success = 0;
+        Date now = new Date();
+        for (Long id : outOrderIds) {
+            StockOutOrder entity = new StockOutOrder();
+            entity.setOutOrderId(id);
+            entity.setSignatureStatus(dto.getSignatureStatus() != null ? dto.getSignatureStatus() : 2);
+            entity.setSignatureTime(dto.getSignatureTime() != null ? dto.getSignatureTime() : now);
+            entity.setSignaturePic(dto.getSignaturePic());
+            entity.setSignatureRemark(dto.getSignatureRemark());
+            stockOutOrderService.updateById(entity);
+            success++;
+        }
+        return AjaxResult.success("批量签名成功，共" + success + "条");
+    }
+
 }
\ No newline at end of file
diff --git a/mhd_wms/src/main/java/com/mhd/wms/interfaces/dto/signature/BatchSignatureDTO.java b/mhd_wms/src/main/java/com/mhd/wms/interfaces/dto/signature/BatchSignatureDTO.java
new file mode 100644
index 000000000..7018288b0
--- /dev/null
+++ b/mhd_wms/src/main/java/com/mhd/wms/interfaces/dto/signature/BatchSignatureDTO.java
@@ -0,0 +1,41 @@
+package com.mhd.wms.interfaces.dto.signature;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import io.swagger.annotations.ApiModelProperty;
+import lombok.Data;
+import org.springframework.format.annotation.DateTimeFormat;
+
+import java.util.Date;
+import java.util.List;
+
+/**
+ * PDA批量签名请求DTO
+ *
+ * <p>支持四种签名方式：电子签名、附件上传、扫二维码、系统自动。</p>
+ */
+@Data
+public class BatchSignatureDTO {
+
+    @ApiModelProperty("入库单ID列表")
+    private List<Long> inOrderIds;
+
+    @ApiModelProperty("出库单ID列表")
+    private List<Long> outOrderIds;
+
+    @ApiModelProperty("签名状态：2-已签名（PDA端直接传2表示签完）")
+    private Integer signatureStatus;
+
+    @ApiModelProperty("签名时间（PDA端可传当前时间）")
+    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
+    @DateTimeFormat(pattern = "yyyy-MM-dd HH:mm:ss")
+    private Date signatureTime;
+
+    @ApiModelProperty("签名图片（base64或URL）")
+    private String signaturePic;
+
+    @ApiModelProperty("签名备注")
+    private String signatureRemark;
+
+    @ApiModelProperty("签名方式：1-电子签名 2-附件上传 3-扫二维码 4-系统自动")
+    private Integer signatureMode;
+}
diff --git a/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockInOrder/StockInOrderApi.java b/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockInOrder/StockInOrderApi.java
index f226463f0..f277c2dd7 100644
--- a/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockInOrder/StockInOrderApi.java
+++ b/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockInOrder/StockInOrderApi.java
@@ -314,4 +314,15 @@ public class StockInOrderApi extends BaseController {
         return stockInOrderApplicationService.batchPush(idList);
     }
 
+    /**
+     * PDA批量入库签名
+     *
+     * <p>勾选多条入库记录批量签名，更新入库表的签名状态、签名时间、签名图片、签名备注。</p>
+     */
+    @ApiOperation("PDA批量入库签名")
+    @PostMapping("/batchSignature")
+    public AjaxResult batchSignature(@RequestBody com.mhd.wms.interfaces.dto.signature.BatchSignatureDTO dto) {
+        return stockInOrderApplicationService.batchSignature(dto);
+    }
+
 }
\ No newline at end of file
diff --git a/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockOutOrder/StockOutOrderApi.java b/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockOutOrder/StockOutOrderApi.java
index de21d757f..1e2562aaa 100644
--- a/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockOutOrder/StockOutOrderApi.java
+++ b/mhd_wms/src/main/java/com/mhd/wms/interfaces/facadeApi/stockOutOrder/StockOutOrderApi.java
@@ -589,4 +589,15 @@ public class StockOutOrderApi extends BaseController {
         }
         return stockOutOrderApplicationService.batchPush(idList);
     }
+
+    /**
+     * PDA批量出库签名
+     *
+     * <p>勾选多条出库记录批量签名，更新出库表的签名状态、签名时间、签名图片、签名备注。</p>
+     */
+    @ApiOperation("PDA批量出库签名")
+    @PostMapping("/batchSignature")
+    public AjaxResult batchSignature(@RequestBody com.mhd.wms.interfaces.dto.signature.BatchSignatureDTO dto) {
+        return stockOutOrderApplicationService.batchSignature(dto);
+    }
 }
\ No newline at end of file