diff --git a/erp-frontend-vue/src/api/purchaseOrder.ts b/erp-frontend-vue/src/api/purchaseOrder.ts
index 8888d50..36fe07a 100644
--- a/erp-frontend-vue/src/api/purchaseOrder.ts
+++ b/erp-frontend-vue/src/api/purchaseOrder.ts
@@ -173,6 +173,11 @@ export function exportPurchaseOrder(params: PurchaseOrderQuery): Promise<Blob> {
   return request.post('/erp/po/order/export', params, { responseType: 'blob' })
 }
 
+// 根据采购订单生成到货通知单
+export function genArrivalNotice(orderId: number): Promise<number> {
+  return request.post(`/erp/po/order/genArrivalNotice/${orderId}`).then((res: any) => res.data)
+}
+
 // ============ 供应商 API（使用 MOM md_vendor，表 erp_po_supplier 在 my_mes 中未建） ============
 
 export function getPoSupplierList(params?: { supplierName?: string; contact1?: string; pageNum?: number; pageSize?: number }): Promise<{ rows: PoSupplier[]; total: number }> {
diff --git a/erp-frontend-vue/src/views/Purchasing/Order/form.vue b/erp-frontend-vue/src/views/Purchasing/Order/form.vue
index 3316fd7..d03ff0a 100644
--- a/erp-frontend-vue/src/views/Purchasing/Order/form.vue
+++ b/erp-frontend-vue/src/views/Purchasing/Order/form.vue
@@ -28,6 +28,7 @@
               <el-button @click="handleSwitchToEdit">编辑</el-button>
               <el-button type="success" @click="handleApprove" :disabled="form.status !== 'PREPARE'">审核</el-button>
               <el-button type="warning" @click="handleUnapprove" :disabled="form.status !== 'APPROVED'">反审核</el-button>
+              <el-button type="info" @click="handleGenArrivalNotice" :disabled="form.status !== 'APPROVED'">生成到货通知单</el-button>
               <el-button @click="handlePrint">打印</el-button>
               <el-button @click="toggleHeaderCollapse">{{ headerCollapsed ? '展开' : '收起' }}</el-button>
             </template>
@@ -379,6 +380,7 @@ import {
   approvePurchaseOrder,
   unapprovePurchaseOrder,
   genPurchaseOrderCode,
+  genArrivalNotice,
   getPoSupplierList,
   getLeadInList,
   STATUS_MAP,
@@ -817,6 +819,18 @@ async function handleUnapprove() {
   }
 }
 
+// ============ Generate arrival notice ============
+async function handleGenArrivalNotice() {
+  if (!form.orderId) return
+  try {
+    await ElMessageBox.confirm('确认根据当前采购订单生成到货通知单吗？', '生成到货通知单', { type: 'info' })
+    const noticeId = await genArrivalNotice(form.orderId)
+    ElMessage.success('到货通知单生成成功')
+  } catch (error: any) {
+    if (error !== 'cancel') console.error('生成到货通知单失败:', error)
+  }
+}
+
 // ============ View-mode actions ============
 function handleNewFromView() { router.push('/purchasing/order/new') }
 function handleSwitchToEdit() {
diff --git a/mom-backend/ktg-mes/src/main/java/com/ktg/mes/po/controller/PoOrderController.java b/mom-backend/ktg-mes/src/main/java/com/ktg/mes/po/controller/PoOrderController.java
index 628a7ef..072e1bf 100644
--- a/mom-backend/ktg-mes/src/main/java/com/ktg/mes/po/controller/PoOrderController.java
+++ b/mom-backend/ktg-mes/src/main/java/com/ktg/mes/po/controller/PoOrderController.java
@@ -1,5 +1,7 @@
 package com.ktg.mes.po.controller;
 
+import java.math.BigDecimal;
+import java.util.Date;
 import java.util.List;
 import javax.servlet.http.HttpServletResponse;
 
@@ -26,6 +28,11 @@ import com.ktg.mes.po.service.IPoOrderService;
 import com.ktg.mes.po.service.IPoOrderLineService;
 import com.ktg.mes.mp.domain.MpPurchase;
 import com.ktg.mes.mp.mapper.MpPurchaseMapper;
+import com.ktg.mes.wm.domain.WmArrivalNotice;
+import com.ktg.mes.wm.domain.WmArrivalNoticeLine;
+import com.ktg.mes.wm.service.IWmArrivalNoticeService;
+import com.ktg.mes.wm.service.IWmArrivalNoticeLineService;
+import com.ktg.system.strategy.AutoCodeUtil;
 import com.ktg.common.utils.poi.ExcelUtil;
 import com.ktg.common.core.page.TableDataInfo;
 
@@ -48,6 +55,15 @@ public class PoOrderController extends BaseController
     @Autowired
     private MpPurchaseMapper mpPurchaseMapper;
 
+    @Autowired
+    private IWmArrivalNoticeService wmArrivalNoticeService;
+
+    @Autowired
+    private IWmArrivalNoticeLineService wmArrivalNoticeLineService;
+
+    @Autowired
+    private AutoCodeUtil autoCodeUtil;
+
     /**
      * 查询采购订单列表（明细视图 - 按行级别，JOIN 订单表头+明细行）
      */
@@ -264,4 +280,73 @@ public class PoOrderController extends BaseController
         }
         return AjaxResult.success("成功反审核 " + count + " 条订单");
     }
+
+    /**
+     * 根据采购订单自动生成到货通知单
+     */
+    @Log(title = "采购订单", businessType = BusinessType.INSERT)
+    @Transactional
+    @PostMapping("/genArrivalNotice/{orderId}")
+    public AjaxResult genArrivalNotice(@PathVariable Long orderId)
+    {
+        // 1. 查询采购订单及明细
+        PoOrder order = poOrderService.selectPoOrderByOrderId(orderId);
+        if (order == null) {
+            return AjaxResult.error("采购订单不存在!");
+        }
+        if (!UserConstants.ORDER_STATUS_APPROVED.equals(order.getStatus())) {
+            return AjaxResult.error("只有已审核的采购订单才能生成到货通知单!");
+        }
+
+        List<PoOrderLine> lines = poOrderLineService.selectPoOrderLineByOrderId(orderId);
+        if (CollUtil.isEmpty(lines)) {
+            return AjaxResult.error("采购订单没有物料明细，无法生成到货通知单!");
+        }
+
+        // 过滤出仍有未到货数量的明细行
+        List<PoOrderLine> pendingLines = new java.util.ArrayList<>();
+        for (PoOrderLine line : lines) {
+            BigDecimal qty = line.getQuantity() != null ? line.getQuantity() : BigDecimal.ZERO;
+            BigDecimal arrived = line.getArrivedQuantity() != null ? line.getArrivedQuantity() : BigDecimal.ZERO;
+            if (qty.subtract(arrived).compareTo(BigDecimal.ZERO) > 0) {
+                pendingLines.add(line);
+            }
+        }
+        if (pendingLines.isEmpty()) {
+            return AjaxResult.error("所有物料已全部到货，无需生成到货通知单!");
+        }
+
+        // 2. 创建到货通知单表头
+        WmArrivalNotice notice = new WmArrivalNotice();
+        notice.setNoticeCode(autoCodeUtil.genSerialCode(UserConstants.ARRIVAL_NOTICE_CODE, ""));
+        notice.setNoticeName("采购订单[" + order.getOrderCode() + "]到货通知单");
+        notice.setPoCode(order.getOrderCode());
+        notice.setVendorId(order.getSupplierId());
+        notice.setVendorCode(order.getSupplierCode());
+        notice.setVendorName(order.getSupplierName());
+        notice.setArrivalDate(order.getDeliveryDate() != null ? order.getDeliveryDate() : new Date());
+        notice.setStatus(UserConstants.ORDER_STATUS_PREPARE);
+        notice.setCreateBy(getUsername());
+        wmArrivalNoticeService.insertWmArrivalNotice(notice);
+
+        // 3. 创建到货通知单明细行
+        for (PoOrderLine line : pendingLines) {
+            WmArrivalNoticeLine noticeLine = new WmArrivalNoticeLine();
+            noticeLine.setNoticeId(notice.getNoticeId());
+            noticeLine.setItemId(line.getItemId());
+            noticeLine.setItemCode(line.getItemCode());
+            noticeLine.setItemName(line.getItemName());
+            noticeLine.setSpecification(line.getSpecification());
+            noticeLine.setUnitOfMeasure(line.getUnitName());
+            noticeLine.setUnitName(line.getUnitName());
+            BigDecimal qty = line.getQuantity() != null ? line.getQuantity() : BigDecimal.ZERO;
+            BigDecimal arrived = line.getArrivedQuantity() != null ? line.getArrivedQuantity() : BigDecimal.ZERO;
+            noticeLine.setQuantityArrival(qty.subtract(arrived));
+            noticeLine.setIqcCheck(UserConstants.NO);
+            noticeLine.setCreateBy(getUsername());
+            wmArrivalNoticeLineService.insertWmArrivalNoticeLine(noticeLine);
+        }
+
+        return AjaxResult.success("到货通知单生成成功", notice.getNoticeId());
+    }
 }