diff --git a/src/app/api/pickOrder/actions.ts b/src/app/api/pickOrder/actions.ts
index 2dcde47..ed22191 100644
--- a/src/app/api/pickOrder/actions.ts
+++ b/src/app/api/pickOrder/actions.ts
@@ -457,6 +457,7 @@ export interface LaneRow {
 
 export interface LaneBtn {
   truckLanceCode: string;
+  loadingSequence?: number | null;
   unassigned: number;
   total: number;
 }
@@ -636,6 +637,7 @@ export async function assignByLane(
   storeId: string,
   truckLanceCode: string,
   truckDepartureTime?: string,
+  loadingSequence?: number | null,
   requiredDate?: string
 ): Promise<any> {
   const response = await serverFetchJson(
@@ -650,6 +652,7 @@ export async function assignByLane(
         storeId,
         truckLanceCode,
         truckDepartureTime,
+        loadingSequence,
         requiredDate,
       }),
     }
diff --git a/src/components/FinishedGoodSearch/FinishedGoodFloorLanePanel.tsx b/src/components/FinishedGoodSearch/FinishedGoodFloorLanePanel.tsx
index a91178e..995c74b 100644
--- a/src/components/FinishedGoodSearch/FinishedGoodFloorLanePanel.tsx
+++ b/src/components/FinishedGoodSearch/FinishedGoodFloorLanePanel.tsx
@@ -1,11 +1,11 @@
 "use client";
 
 import { Box, Button, Grid, Stack, Typography, Select, MenuItem, FormControl, InputLabel ,Tooltip} from "@mui/material";
-import { useCallback, useEffect, useState, useRef } from "react";
+import { useCallback, useEffect, useMemo, useState, useRef } from "react";
 import { useTranslation } from "react-i18next";
 import { useSession } from "next-auth/react";
 import { SessionWithTokens } from "@/config/authConfig";
-import { fetchStoreLaneSummary,fetchReleasedDoPickOrdersForSelection,fetchReleasedDoPickOrderCountByStore, assignByLane, type StoreLaneSummary } from "@/app/api/pickOrder/actions";
+import { fetchStoreLaneSummary,fetchReleasedDoPickOrdersForSelection,fetchReleasedDoPickOrderCountByStore, assignByLane, type StoreLaneSummary, type LaneRow, type LaneBtn } from "@/app/api/pickOrder/actions";
 import Swal from "sweetalert2";
 import dayjs from "dayjs";
 import ReleasedDoPickOrderSelectModal from "./ReleasedDoPickOrderSelectModal";
@@ -15,6 +15,9 @@ interface Props {
   onSwitchToDetailTab?: () => void;
 }
 
+type LaneSlot4F = { truckDepartureTime: string; lane: LaneBtn };
+type TruckGroup4F = { truckLanceCode: string; slots: (LaneSlot4F & { sequenceIndex: number })[] };
+
 const FinishedGoodFloorLanePanel: React.FC<Props> = ({ onPickOrderAssigned, onSwitchToDetailTab }) => {
   const { t } = useTranslation("pickOrder");
   const { data: session } = useSession() as { data: SessionWithTokens | null };
@@ -41,6 +44,7 @@ const [defaultDateScope, setDefaultDateScope] = useState<"today" | "before">("to
 
   const [selectedDate, setSelectedDate] = useState<string>("today");
   const [releaseType, setReleaseType] = useState<string>("batch");
+  const [ticketFloor, setTicketFloor] = useState<"2/F" | "4/F">("2/F");
   const startFullTimer = () => {
     if (typeof window === "undefined") return;
     const key = "__FG_FLOOR_FULL_TIMER_STARTED__" as const;
@@ -166,6 +170,7 @@ const [defaultDateScope, setDefaultDateScope] = useState<"today" | "before">("to
     storeId: string, 
     truckDepartureTime: string, 
     truckLanceCode: string,
+    loadingSequence: number | null | undefined,
     requiredDate: string
 
   ) => {
@@ -183,7 +188,7 @@ const [defaultDateScope, setDefaultDateScope] = useState<"today" | "before">("to
     }
     setIsAssigning(true);
     try {
-      const res = await assignByLane(currentUserId, storeId, truckLanceCode, truckDepartureTime, dateParam);
+      const res = await assignByLane(currentUserId, storeId, truckLanceCode, truckDepartureTime, loadingSequence ?? null, dateParam);
     
     if (res.code === "SUCCESS") {
       console.log(" Successfully assigned pick order from lane", truckLanceCode);
@@ -229,6 +234,7 @@ const handleLaneButtonClick = useCallback(async (
   storeId: string,
   truckDepartureTime: string,
   truckLanceCode: string,
+  loadingSequence: number | null | undefined,
   requiredDate: string,
   unassigned: number,
   total: number
@@ -252,6 +258,7 @@ const handleLaneButtonClick = useCallback(async (
       <div style="text-align: left; padding: 10px 0;">
         <p><strong>${t("Store")}:</strong> ${storeId}</p>
         <p><strong>${t("Lane Code")}:</strong> ${truckLanceCode}</p>
+        ${loadingSequence != null ? `<p><strong>${t("Loading Sequence")}:</strong> ${loadingSequence}</p>` : ``}
         <p><strong>${t("Departure Time")}:</strong> ${truckDepartureTime}</p>
         <p><strong>${t("Required Date")}:</strong> ${dateDisplay}</p>
         <p><strong>${t("Available Orders")}:</strong> ${unassigned}/${total}</p>
@@ -268,7 +275,7 @@ const handleLaneButtonClick = useCallback(async (
 
   // Only proceed if user confirmed
   if (result.isConfirmed) {
-    await handleAssignByLane(storeId, truckDepartureTime, truckLanceCode, requiredDate);
+    await handleAssignByLane(storeId, truckDepartureTime, truckLanceCode, loadingSequence, requiredDate);
   }
 }, [handleAssignByLane, t]);
 
@@ -290,6 +297,31 @@ const getDateLabel = (offset: number) => {
     return flattened;
   };
 
+  /** 4/F：依車線匯總，同車多筆依 API 出現順序為裝載序（出發時間相同時仍可分序）。 */
+  const truckGroups4F = useMemo((): TruckGroup4F[] => {
+    const rows = summary4F?.rows as LaneRow[] | undefined;
+    if (!rows?.length) return [];
+    const map = new Map<string, LaneSlot4F[]>();
+    for (const row of rows) {
+      for (const lane of row.lanes) {
+        const code = lane.truckLanceCode;
+        const list = map.get(code);
+        const slot: LaneSlot4F = { truckDepartureTime: row.truckDepartureTime, lane };
+        if (list) list.push(slot);
+        else map.set(code, [slot]);
+      }
+    }
+    return Array.from(map.entries())
+      .sort(([a], [b]) => a.localeCompare(b))
+      .map(([truckLanceCode, slots]) => ({
+        truckLanceCode,
+        slots: slots
+          .slice()
+          .sort((a, b) => (a.lane.loadingSequence ?? 999) - (b.lane.loadingSequence ?? 999))
+          .map((s: LaneSlot4F, i: number) => ({ ...s, sequenceIndex: i + 1 })),
+      }));
+  }, [summary4F?.rows]);
+
   return (
     <Box sx={{ mb: 2 }}>
       {/* Date Selector Dropdown and Legend */}
@@ -348,6 +380,21 @@ const getDateLabel = (offset: number) => {
             </Select>
           </FormControl>
         </Box>
+        <Box sx={{ minWidth: 120, maxWidth: 200 }}>
+          <FormControl fullWidth size="small">
+            <InputLabel id="ticket-floor-select-label">{t("Floor ticket")}</InputLabel>
+            <Select
+              labelId="ticket-floor-select-label"
+              id="ticket-floor-select"
+              value={ticketFloor}
+              label={t("Floor ticket")}
+              onChange={(e) => setTicketFloor(e.target.value as "2/F" | "4/F")}
+            >
+              <MenuItem value="2/F">{t("2F ticket")}</MenuItem>
+              <MenuItem value="4/F">{t("4F ticket")}</MenuItem>
+            </Select>
+          </FormControl>
+        </Box>
         <Box 
           sx={{ 
             p: 1,
@@ -362,19 +409,12 @@ const getDateLabel = (offset: number) => {
             {t("EDT - Lane Code (Unassigned/Total)")}
           </Typography>
         </Box>
-      </Stack>
-      <Stack direction="row" spacing={2} sx={{ mb: 2, alignItems: 'flex-start' }}>
-     
-
-   
-    
-        
       </Stack>
 
-
       {/* Grid containing both floors */}
       <Grid  container spacing={2}>
         {/* 2/F 楼层面板 */}
+        {ticketFloor === "2/F" && (
         <Grid item xs={12}>
           <Stack direction="row" spacing={2} alignItems="flex-start">
             {/* Floor Label */}
@@ -416,55 +456,71 @@ const getDateLabel = (offset: number) => {
                 </Typography>
               ) : (
                 <Grid container spacing={1}>
-                  {flattenRows(summary2F.rows).map((item, idx) => (
-                    <Grid item xs={12} sm={6} md={3} key={idx}>
+                  {summary2F.rows.map((row) => (
+                    <Grid item xs={12} key={row.truckDepartureTime}>
                       <Stack
-                        direction="row"
+                        direction={{ xs: "column", sm: "row" }}
                         spacing={1}
-                        alignItems="center"
+                        alignItems={{ xs: "stretch", sm: "center" }}
                         sx={{
-                          border: '1px solid #e0e0e0',
+                          border: "1px solid #e0e0e0",
                           borderRadius: 0.5,
                           p: 1,
-                          backgroundColor: '#fff',
-                          height: '100%'
+                          backgroundColor: "#fff",
                         }}
                       >
-                        {/* Time on the left */}
-                        <Typography 
+                        <Typography
                           variant="body2"
-                          sx={{ 
+                          sx={{
                             fontWeight: 600,
-                            fontSize: '1rem',
-                            minWidth: 50,
-                            whiteSpace: 'nowrap'
+                            fontSize: "1rem",
+                            minWidth: { sm: 60 },
+                            whiteSpace: "nowrap",
+                            pt: { xs: 0, sm: 0.5 },
                           }}
                         >
-                          {item.truckDepartureTime}
+                          {row.truckDepartureTime}
                         </Typography>
-                        
-                        {/* Single Button on the right */}
-                        <Button
-                          variant="outlined"
-                          size="medium"
-                          disabled={item.lane.unassigned === 0 || isAssigning}
-                          onClick={() => handleLaneButtonClick("2/F", item.truckDepartureTime, item.lane.truckLanceCode, selectedDate, item.lane.unassigned, item.lane.total)}
-                          sx={{
-                            flex: 1,
-                            fontSize: '1.1rem',
-                            py: 1,
-                            px: 1.5,
-                            borderWidth: 1,
-                            borderColor: '#ccc',
-                            fontWeight: 500,
-                            '&:hover': { 
-                              borderColor: '#999',
-                              backgroundColor: '#f5f5f5'
-                            }
-                          }}
+
+                        <Stack
+                          direction="row"
+                          flexWrap="wrap"
+                          sx={{ flex: 1, gap: 1 }}
                         >
-                          {`${item.lane.truckLanceCode} (${item.lane.unassigned}/${item.lane.total})`}
-                        </Button>
+                          {row.lanes.map((lane) => (
+                            <Button
+                              key={`${row.truckDepartureTime}-${lane.truckLanceCode}`}
+                              variant="outlined"
+                              size="medium"
+                              disabled={lane.unassigned === 0 || isAssigning}
+                              onClick={() =>
+                                handleLaneButtonClick(
+                                  "2/F",
+                                  row.truckDepartureTime,
+                                  lane.truckLanceCode,
+                                  null,
+                                  selectedDate,
+                                  lane.unassigned,
+                                  lane.total
+                                )
+                              }
+                              sx={{
+                                fontSize: "1.1rem",
+                                py: 1,
+                                px: 1.5,
+                                borderWidth: 1,
+                                borderColor: "#ccc",
+                                fontWeight: 500,
+                                "&:hover": {
+                                  borderColor: "#999",
+                                  backgroundColor: "#f5f5f5",
+                                },
+                              }}
+                            >
+                              {`${lane.truckLanceCode} (${lane.unassigned}/${lane.total})`}
+                            </Button>
+                          ))}
+                        </Stack>
                       </Stack>
                     </Grid>
                   ))}
@@ -473,8 +529,8 @@ const getDateLabel = (offset: number) => {
             </Box>
           </Stack>
         </Grid>
-
-        {/* 4/F 楼层面板 */}
+)}
+{ticketFloor === "4/F" && (
         <Grid item xs={12}>
           <Stack direction="row" spacing={2} alignItems="flex-start">
             {/* Floor Label */}
@@ -501,7 +557,7 @@ const getDateLabel = (offset: number) => {
             >
               {isLoadingSummary ? (
                 <Typography variant="caption">{t("Loading...")}</Typography>
-              ) : !summary4F?.rows || summary4F.rows.length === 0 ? (
+              ) : truckGroups4F.length === 0 ? (
                 <Typography 
                   variant="body2" 
                   color="text.secondary"
@@ -516,55 +572,69 @@ const getDateLabel = (offset: number) => {
                 </Typography>
               ) : (
                 <Grid container spacing={1}>
-                  {flattenRows(summary4F.rows).map((item, idx) => (
-                    <Grid item xs={12} sm={6} md={3} key={idx}>
+                  {truckGroups4F.map(({ truckLanceCode, slots }) => (
+                    <Grid item xs={12} key={truckLanceCode}>
                       <Stack
-                        direction="row"
+                        direction={{ xs: "column", sm: "row" }}
                         spacing={1}
-                        alignItems="center"
+                        alignItems={{ xs: "stretch", sm: "center" }}
                         sx={{
-                          border: '1px solid #e0e0e0',
+                          border: "1px solid #e0e0e0",
                           borderRadius: 0.5,
                           p: 1,
-                          backgroundColor: '#fff',
-                          height: '100%'
+                          backgroundColor: "#fff",
                         }}
                       >
-                        {/* Time on the left */}
-                        <Typography 
+                        <Typography
                           variant="body2"
-                          sx={{ 
-                            fontWeight: 600,
-                            fontSize: '1rem',
-                            minWidth: 50,
-                            whiteSpace: 'nowrap'
+                          sx={{
+                            fontWeight: 700,
+                            fontSize: "1rem",
+                            minWidth: { sm: 160 },
+                            pt: { xs: 0, sm: 0.5 },
                           }}
                         >
-                          {item.truckDepartureTime}
+                          {truckLanceCode}
                         </Typography>
-                        
-                        {/* Single Button on the right */}
-                        <Button
-                          variant="outlined"
-                          size="medium"
-                          disabled={item.lane.unassigned === 0 || isAssigning}
-                          onClick={() => handleLaneButtonClick("4/F", item.truckDepartureTime, item.lane.truckLanceCode, selectedDate, item.lane.unassigned, item.lane.total)}
-                          sx={{
-                            flex: 1,
-                            fontSize: '1.1rem',
-                            py: 1,
-                            px: 1.5,
-                            borderWidth: 1,
-                            borderColor: '#ccc',
-                            fontWeight: 500,
-                            '&:hover': { 
-                              borderColor: '#999',
-                              backgroundColor: '#f5f5f5'
-                            }
-                          }}
+                        <Stack
+                          direction="row"
+                          flexWrap="wrap"
+                          sx={{ flex: 1, gap: 1 }}
                         >
-                          {`${item.lane.truckLanceCode} (${item.lane.unassigned}/${item.lane.total})`}
-                        </Button>
+                          {slots.map((slot) => (
+                            <Button
+                              key={`${truckLanceCode}-${slot.sequenceIndex}-${slot.lane.truckLanceCode}-${slot.truckDepartureTime}`}
+                              variant="outlined"
+                              size="medium"
+                              disabled={slot.lane.unassigned === 0 || isAssigning}
+                              onClick={() =>
+                                handleLaneButtonClick(
+                                  "4/F",
+                                  slot.truckDepartureTime,
+                                  slot.lane.truckLanceCode,
+                                  slot.lane.loadingSequence ?? null,
+                                  selectedDate,
+                                  slot.lane.unassigned,
+                                  slot.lane.total
+                                )
+                              }
+                              sx={{
+                                fontSize: "1rem",
+                                py: 0.75,
+                                px: 1.25,
+                                borderWidth: 1,
+                                borderColor: "#ccc",
+                                fontWeight: 500,
+                                "&:hover": {
+                                  borderColor: "#999",
+                                  backgroundColor: "#f5f5f5",
+                                },
+                              }}
+                            >
+                              {`${t("Loading sequence n", { n: slot.lane.loadingSequence ?? slot.sequenceIndex })} (${slot.lane.unassigned}/${slot.lane.total})`}
+                            </Button>
+                          ))}
+                        </Stack>
                       </Stack>
                     </Grid>
                   ))}
@@ -573,7 +643,7 @@ const getDateLabel = (offset: number) => {
             </Box>
           </Stack>
         </Grid>
-
+)}
                 {/* 4/F Today default lane*/}
                 <Grid item xs={12}>
                   
@@ -632,7 +702,9 @@ const getDateLabel = (offset: number) => {
               {t("Released orders not yet completed - click lane to select and assign")}
             </Typography>
           </Box>
+         
         </Grid>
+         {ticketFloor === "2/F" && (
           <Grid item xs={12}>
           <Stack direction="row" spacing={2} alignItems="flex-start">
             <Typography variant="h6" sx={{ fontWeight: 600, minWidth: 60, pt: 1 }}>
@@ -699,8 +771,8 @@ const getDateLabel = (offset: number) => {
             </Box>
           </Stack>
         </Grid>
-
-        {/* 4/F 未完成已放單 - 與上方相同 UI */}
+        )}
+              {ticketFloor === "4/F" && (
         <Grid item xs={12}>
           <Stack direction="row" spacing={2} alignItems="flex-start">
             <Typography variant="h6" sx={{ fontWeight: 600, minWidth: 60, pt: 1 }}>
@@ -767,7 +839,10 @@ const getDateLabel = (offset: number) => {
             </Box>
           </Stack>
         </Grid>
+              )}
         <Grid item xs={12}>
+
+            
   <Stack direction="row" spacing={2}>
     <Typography sx={{ fontWeight: 600, minWidth: 60, pt: 1 }}>{t("Truck X")} </Typography>
     <Box