diff --git a/src/app/(main)/testing/page.tsx b/src/app/(main)/testing/page.tsx
index d2ce781..ac10ecb 100644
--- a/src/app/(main)/testing/page.tsx
+++ b/src/app/(main)/testing/page.tsx
@@ -30,8 +30,10 @@ import {
   type JobOrderListItem,
 } from "@/app/api/bagPrint/actions";
 import {
+  fetchLaserBag2Settings,
   runLaserBag2AutoSend,
   type LaserBag2AutoSendReport,
+  type LaserLastReceiveSuccess,
 } from "@/app/api/laserPrint/actions";
 import * as XLSX from "xlsx";
 
@@ -79,6 +81,7 @@ export default function TestingPage() {
   const [laserAutoLoading, setLaserAutoLoading] = useState(false);
   const [laserAutoReport, setLaserAutoReport] = useState<LaserBag2AutoSendReport | null>(null);
   const [laserAutoError, setLaserAutoError] = useState<string | null>(null);
+  const [laserLastReceive, setLaserLastReceive] = useState<LaserLastReceiveSuccess | null>(null);
 
   const onpackPayload = useMemo(() => buildOnPackJobOrdersPayload(onpackJobOrders), [onpackJobOrders]);
 
@@ -105,6 +108,22 @@ export default function TestingPage() {
     };
   }, [tabValue, onpackPlanDate]);
 
+  useEffect(() => {
+    if (tabValue !== 2) return;
+    let cancelled = false;
+    (async () => {
+      try {
+        const s = await fetchLaserBag2Settings();
+        if (!cancelled) setLaserLastReceive(s.lastReceiveSuccess ?? null);
+      } catch {
+        if (!cancelled) setLaserLastReceive(null);
+      }
+    })();
+    return () => {
+      cancelled = true;
+    };
+  }, [tabValue]);
+
   const handleDownloadGrnPreviewXlsx = async () => {
     try {
       const response = await clientAuthFetch(
@@ -179,6 +198,12 @@ export default function TestingPage() {
         limitPerRun: Number.isFinite(lim) ? lim : 0,
       });
       setLaserAutoReport(report);
+      try {
+        const s = await fetchLaserBag2Settings();
+        setLaserLastReceive(s.lastReceiveSuccess ?? null);
+      } catch {
+        /* ignore */
+      }
     } catch (e) {
       setLaserAutoError(e instanceof Error ? e.message : String(e));
     } finally {
@@ -351,6 +376,28 @@ export default function TestingPage() {
 
       <TabPanel value={tabValue} index={2}>
         <Section title="3. Laser Bag2 自動送（與 /laserPrint 相同邏輯）">
+          {laserLastReceive ? (
+            <Alert severity="info" sx={{ mb: 2 }}>
+              <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
+                上次印表機已確認（receive）的工單（資料庫）
+              </Typography>
+              <Typography variant="body2" sx={{ mt: 0.5 }}>
+                工單號：{laserLastReceive.jobOrderNo ?? "—"}　Lot：{laserLastReceive.lotNo ?? "—"}
+              </Typography>
+              <Typography variant="body2" sx={{ mt: 0.5, fontFamily: "monospace" }}>
+                JSON：{" "}
+                {laserLastReceive.itemId != null && laserLastReceive.stockInLineId != null
+                  ? JSON.stringify({
+                      itemId: laserLastReceive.itemId,
+                      stockInLineId: laserLastReceive.stockInLineId,
+                    })
+                  : "—"}
+              </Typography>
+              <Typography variant="caption" color="textSecondary" display="block" sx={{ mt: 0.5 }}>
+                {laserLastReceive.sentAt ?? ""}　{laserLastReceive.source ?? ""}
+              </Typography>
+            </Alert>
+          ) : null}
           <Alert severity="warning" sx={{ mb: 2 }}>
             依資料庫 <strong>LASER_PRINT.host</strong>、<strong>LASER_PRINT.port</strong>、<strong>LASER_PRINT.itemCodes</strong> 查當日包裝工單並送 TCP（每筆工單預設 3 次、間隔 3 秒，與前端點列相同）。
             排程預設關閉；啟用請設 <code>laser.bag2.auto-send.enabled=true</code>（後端 application.yml）。
diff --git a/src/app/api/laserPrint/actions.ts b/src/app/api/laserPrint/actions.ts
index eb76fd4..952892c 100644
--- a/src/app/api/laserPrint/actions.ts
+++ b/src/app/api/laserPrint/actions.ts
@@ -18,11 +18,24 @@ export interface JobOrderListItem {
   laserPrintedQty?: number;
 }
 
+export interface LaserLastReceiveSuccess {
+  jobOrderId?: number | null;
+  jobOrderNo?: string | null;
+  lotNo?: string | null;
+  itemId?: number | null;
+  stockInLineId?: number | null;
+  printerAck?: string | null;
+  sentAt?: string | null;
+  source?: string | null;
+}
+
 export interface LaserBag2Settings {
   host: string;
   port: number;
   /** Comma-separated item codes; empty string = show all packaging job orders */
   itemCodes: string;
+  /** Last job where the laser returned a receive ack (from DB settings). */
+  lastReceiveSuccess?: LaserLastReceiveSuccess | null;
 }
 
 export interface LaserBag2SendRequest {
@@ -32,12 +45,20 @@ export interface LaserBag2SendRequest {
   itemName: string | null;
   printerIp?: string;
   printerPort?: number;
+  jobOrderId?: number | null;
+  jobOrderNo?: string | null;
+  lotNo?: string | null;
+  source?: string | null;
 }
 
 export interface LaserBag2SendResponse {
   success: boolean;
   message: string;
   payloadSent?: string | null;
+  /** Raw TCP reply from the laser plugin (often `receive;;`). */
+  printerAck?: string | null;
+  /** True when the peer reply contained `receive` and not `invalid`. */
+  receiveAcknowledged?: boolean;
 }
 
 /**
@@ -133,6 +154,8 @@ export interface LaserBag2JobSendResult {
   itemCode: string | null;
   success: boolean;
   message: string;
+  printerAck?: string | null;
+  receiveAcknowledged?: boolean;
 }
 
 export interface LaserBag2AutoSendReport {
diff --git a/src/components/LaserPrint/LaserPrintSearch.tsx b/src/components/LaserPrint/LaserPrintSearch.tsx
index 873f57b..5511cba 100644
--- a/src/components/LaserPrint/LaserPrintSearch.tsx
+++ b/src/components/LaserPrint/LaserPrintSearch.tsx
@@ -23,6 +23,7 @@ import {
   checkPrinterStatus,
   fetchLaserJobOrders,
   fetchLaserBag2Settings,
+  type LaserLastReceiveSuccess,
   JobOrderListItem,
   patchSetting,
   sendLaserBag2Job,
@@ -83,6 +84,7 @@ const LaserPrintSearch: React.FC = () => {
   const [laserHost, setLaserHost] = useState("192.168.18.77");
   const [laserPort, setLaserPort] = useState("45678");
   const [laserItemCodes, setLaserItemCodes] = useState("PP1175");
+  const [lastLaserReceive, setLastLaserReceive] = useState<LaserLastReceiveSuccess | null>(null);
   const [settingsLoaded, setSettingsLoaded] = useState(false);
   const [printerConnected, setPrinterConnected] = useState(false);
   const [printerMessage, setPrinterMessage] = useState("檸檬機(激光機)未連接");
@@ -93,8 +95,10 @@ const LaserPrintSearch: React.FC = () => {
       setLaserHost(s.host);
       setLaserPort(String(s.port));
       setLaserItemCodes(s.itemCodes ?? "PP1175");
+      setLastLaserReceive(s.lastReceiveSuccess ?? null);
       setSettingsLoaded(true);
     } catch (e) {
+      setLastLaserReceive(null);
       setErrorSnackbar({
         open: true,
         message: e instanceof Error ? e.message : "無法載入系統設定",
@@ -183,6 +187,10 @@ const LaserPrintSearch: React.FC = () => {
       stockInLineId: jo.stockInLineId,
       itemCode: jo.itemCode,
       itemName: jo.itemName,
+      jobOrderId: jo.id,
+      jobOrderNo: jo.code,
+      lotNo: jo.lotNo,
+      source: "MANUAL",
     });
 
   const handleRowClick = async (jo: JobOrderListItem) => {
@@ -196,6 +204,8 @@ const LaserPrintSearch: React.FC = () => {
     setSelectedId(jo.id);
     setSendingJobId(jo.id);
     try {
+      let lastAck: string | undefined;
+      let anyReceiveAck = false;
       for (let i = 0; i < LASER_SEND_COUNT; i++) {
         const r = await sendOne(jo);
         if (!r.success) {
@@ -205,11 +215,20 @@ const LaserPrintSearch: React.FC = () => {
           });
           return;
         }
+        if (r.printerAck) lastAck = r.printerAck;
+        if (r.receiveAcknowledged) anyReceiveAck = true;
         if (i < LASER_SEND_COUNT - 1) {
           await delay(BETWEEN_SEND_MS);
         }
       }
-      setSuccessSignal(`已送出 ${LASER_SEND_COUNT} 次至檸檬機(激光機)`);
+      const ackHint =
+        anyReceiveAck && lastAck
+          ? `（印表機已回覆：${lastAck}）`
+          : lastAck
+            ? `（最後回覆：${lastAck}）`
+            : "";
+      setSuccessSignal(`已送出 ${LASER_SEND_COUNT} 次至檸檬機(激光機)${ackHint}`);
+      await loadSystemSettings();
     } catch (e) {
       setErrorSnackbar({
         open: true,
@@ -238,6 +257,14 @@ const LaserPrintSearch: React.FC = () => {
     }
   };
 
+  const lastReceiveJson =
+    lastLaserReceive?.itemId != null && lastLaserReceive?.stockInLineId != null
+      ? JSON.stringify({
+          itemId: lastLaserReceive.itemId,
+          stockInLineId: lastLaserReceive.stockInLineId,
+        })
+      : null;
+
   return (
     <Box sx={{ minHeight: "70vh", display: "flex", flexDirection: "column" }}>
       {successSignal && (
@@ -245,6 +272,23 @@ const LaserPrintSearch: React.FC = () => {
           {successSignal}
         </Alert>
       )}
+      {settingsLoaded && lastLaserReceive && (
+        <Alert severity="info" sx={{ mb: 2 }}>
+          <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>
+            上次印表機已確認（receive）的工單
+          </Typography>
+          <Typography variant="body2" component="div" sx={{ mt: 0.5 }}>
+            工單號：{lastLaserReceive.jobOrderNo ?? "—"}　批號／Lot：{lastLaserReceive.lotNo ?? "—"}
+          </Typography>
+          <Typography variant="body2" component="div" sx={{ mt: 0.5, fontFamily: "monospace" }}>
+            JSON：{lastReceiveJson ?? "—"}
+          </Typography>
+          <Typography variant="caption" color="text.secondary" display="block" sx={{ mt: 0.5 }}>
+            時間：{lastLaserReceive.sentAt ?? "—"}　來源：{lastLaserReceive.source ?? "—"}
+            {lastLaserReceive.printerAck ? `　回覆：${lastLaserReceive.printerAck}` : ""}
+          </Typography>
+        </Alert>
+      )}
 
       <Paper sx={{ p: 2, mb: 2, backgroundColor: BG_TOP }}>
         <Stack direction="row" alignItems="center" justifyContent="space-between" flexWrap="wrap" gap={2}>