diff --git a/Memory.md b/Memory.md
index d9eb8ae..579116a 100644
--- a/Memory.md
+++ b/Memory.md
@@ -126,4 +126,11 @@
 - 資產卡片全新字段：現價、市值、持倉、攤薄/成本（合併為 `[dilutedCostNative] / [avgCostNative]` 格式）、浮動盈虧（帶百分比）、累計盈虧（帶百分比）、持倉天數。
 - 盈虧顏色遵循中國市場慣例：大於 0 顯示紅色，小於 0 顯示綠色。
 - 所有百分比保留 2 位小數，0 值正常顯示 `0.00`。
-- 卡片佈局優化為響應式 `grid-cols-1 md:grid-cols-2 lg:grid-cols-3`。
\ No newline at end of file
+- 卡片佈局優化為響應式 `grid-cols-1 md:grid-cols-2 lg:grid-cols-3`。
+
+## 基於文本域粘貼的歷史價格批量導入功能 (Bulk Import, Task 49)
+- 開發了基於文本域粘貼的歷史價格批量導入功能，支持從 Excel 快速複製錄入每日淨價。
+- 在 `src/actions/market.ts` 中新增 `importHistoricalPrices(assetId, data)` Server Action，遍歷數據數組對 `assetPricesHistory` 表執行批量 Upsert（基於 `(assetId, date)` 聯合唯一索引的 `onConflictDoUpdate`），衝突時用新價格覆蓋舊價格。
+- 前端 `app/dashboard/page.tsx` 的持倉明細表「操作」列與展開區域均新增【導入價格】按鈕。
+- 點擊按鈕彈出 Dialog，內含 `<textarea>` 文本域，支持用戶從 Excel 直接複製粘貼，格式為 `YYYY-MM-DD, 價格`（每行一條）。
+- 前端按換行和逗號解析文本，生成 `{date, price}` 數組後調用 `importHistoricalPrices` Action，導入完成後 Toast 提示成功/失敗條數並刷新頁面。
\ No newline at end of file
diff --git a/app/dashboard/page.tsx b/app/dashboard/page.tsx
index 834159c..0070386 100644
--- a/app/dashboard/page.tsx
+++ b/app/dashboard/page.tsx
@@ -30,7 +30,8 @@ import { SyncButton } from '@/components/assets/sync-button';
 import { AddTransactionDialog } from '@/components/transactions/add-transaction-dialog';
 import { UpdateTransactionDialog } from '@/components/transactions/update-transaction-dialog';
 import { deleteTransaction } from '@/actions/transaction';
-import { ChevronDown, ChevronUp, Plus, Edit3, Trash2 } from 'lucide-react';
+import { importHistoricalPrices } from '@/actions/market';
+import { ChevronDown, ChevronUp, Plus, Edit3, Trash2, Upload } from 'lucide-react';
 import Big from 'big.js';
 
 const txTypeMap: Record<string, string> = {
@@ -87,6 +88,9 @@ export default function DashboardPage() {
   const [updateTarget, setUpdateTarget] = useState<any>(null);
   const [deleteTarget, setDeleteTarget] = useState<any>(null);
   const [snapshots, setSnapshots] = useState<any[]>([]);
+  const [importDialogOpen, setImportDialogOpen] = useState(false);
+  const [importAssetId, setImportAssetId] = useState<string>('');
+  const [importText, setImportText] = useState('');
 
   useEffect(() => {
     async function loadData() {
@@ -141,6 +145,46 @@ export default function DashboardPage() {
     });
   }
 
+  function handleOpenImportDialog(assetId: string) {
+    setImportAssetId(assetId);
+    setImportText('');
+    setImportDialogOpen(true);
+  }
+
+  function handleImportSubmit() {
+    startTransition(async () => {
+      const lines = importText.split('\n').filter(l => l.trim());
+      const data: Array<{ date: string; price: string }> = [];
+
+      for (const line of lines) {
+        const parts = line.split(',');
+        if (parts.length >= 2) {
+          const date = parts[0].trim();
+          const price = parts[1].trim();
+          if (date && price) {
+            data.push({ date, price });
+          }
+        }
+      }
+
+      if (data.length === 0) {
+        toast.error('未解析到有效數據，請檢查格式');
+        setImportDialogOpen(false);
+        return;
+      }
+
+      const result = await importHistoricalPrices(importAssetId, data);
+      if (result.success) {
+        toast.success(`成功導入 ${result.imported} 條價格記錄` + (result.errors ? `，${result.errors} 條失敗` : ''));
+        setImportText('');
+        setImportDialogOpen(false);
+        window.location.reload();
+      } else {
+        toast.error(result.error || '導入失敗');
+      }
+    });
+  }
+
   const formattedTotal = formatAmount(totalCnyValue);
   const formattedTotalPnl = formatAmount(totalPnlCny);
   const formattedUnrealized = formatAmount(unrealizedPnlCny);
@@ -271,6 +315,18 @@ export default function DashboardPage() {
                               <Plus className="h-3 w-3 mr-1" />
                               添加
                             </Button>
+                            <Button
+                              size="sm"
+                              variant="ghost"
+                              className="h-7 px-2 text-xs"
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                handleOpenImportDialog(pos.assetId);
+                              }}
+                            >
+                              <Upload className="h-3 w-3 mr-1" />
+                              导入价格
+                            </Button>
                           </div>
                         </TableCell>
                       </TableRow>
@@ -281,18 +337,32 @@ export default function DashboardPage() {
                               <div className="space-y-2">
                                 <div className="flex items-center justify-between pb-2 border-b border-border/50">
                                   <span className="text-sm font-semibold text-foreground">流水明細</span>
-                                  <Button
-                                    size="sm"
-                                    variant="outline"
-                                    className="h-7 px-2 text-xs"
-                                    onClick={(e) => {
-                                      e.stopPropagation();
-                                      handleOpenDialog(pos.assetId);
-                                    }}
-                                  >
-                                    <Plus className="h-3 w-3 mr-1" />
-                                    新增記錄
-                                  </Button>
+                                  <div className="flex items-center gap-1">
+                                    <Button
+                                      size="sm"
+                                      variant="outline"
+                                      className="h-7 px-2 text-xs"
+                                      onClick={(e) => {
+                                        e.stopPropagation();
+                                        handleOpenDialog(pos.assetId);
+                                      }}
+                                    >
+                                      <Plus className="h-3 w-3 mr-1" />
+                                      新增記錄
+                                    </Button>
+                                    <Button
+                                      size="sm"
+                                      variant="outline"
+                                      className="h-7 px-2 text-xs"
+                                      onClick={(e) => {
+                                        e.stopPropagation();
+                                        handleOpenImportDialog(pos.assetId);
+                                      }}
+                                    >
+                                      <Upload className="h-3 w-3 mr-1" />
+                                      导入价格
+                                    </Button>
+                                  </div>
                                 </div>
                                 {pos.transactions && pos.transactions.length > 0 ? (
                                   <Table>
@@ -437,6 +507,39 @@ export default function DashboardPage() {
           </DialogFooter>
         </DialogContent>
       </Dialog>
+
+      <Dialog open={importDialogOpen} onOpenChange={setImportDialogOpen}>
+        <DialogContent className="sm:max-w-[550px]">
+          <DialogHeader>
+            <DialogTitle>导入历史价格</DialogTitle>
+            <DialogDescription>
+              從 Excel 複製粘貼價格數據，格式：日期, 價格（每行一條）
+            </DialogDescription>
+          </DialogHeader>
+          <div className="space-y-3 py-2">
+            <textarea
+              value={importText}
+              onChange={(e) => setImportText(e.target.value)}
+              placeholder={`2026-04-01, 150.5\n2026-04-02, 151.2\n2026-04-03, 149.8`}
+              className="flex w-full rounded-md border border-input bg-background px-3 py-2 text-sm shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring min-h-[180px] font-mono text-sm resize-y"
+            />
+            <p className="text-xs text-muted-foreground">
+              支持從 Excel 直接複製粘貼。每行格式：`日期, 價格`，日期格式為 `YYYY-MM-DD`。
+            </p>
+          </div>
+          <DialogFooter className="gap-2 sm:gap-0">
+            <Button variant="outline" onClick={() => setImportDialogOpen(false)}>
+              取消
+            </Button>
+            <Button
+              onClick={handleImportSubmit}
+              disabled={isPending || !importText.trim()}
+            >
+              {isPending ? '導入中...' : '開始導入'}
+            </Button>
+          </DialogFooter>
+        </DialogContent>
+      </Dialog>
     </div>
   );
 }
diff --git a/src/actions/market.ts b/src/actions/market.ts
index faaad72..d2729c9 100644
--- a/src/actions/market.ts
+++ b/src/actions/market.ts
@@ -2,9 +2,10 @@
 
 import { ProxyAgent, setGlobalDispatcher } from 'undici';
 import { db } from '@/db';
-import { assets } from '@/db/schema';
+import { assets, assetPricesHistory } from '@/db/schema';
 import { eq } from 'drizzle-orm';
 import { revalidatePath } from 'next/cache';
+import { onConflictDoUpdate } from 'drizzle-orm/pg-core';
 
 function getTencentSymbol(asset: { symbol: string; exchange: string | null }): string {
   const cleanSymbol = asset.symbol.trim().toUpperCase().replace(/[^0-9A-Z]/g, '');
@@ -80,3 +81,58 @@ export async function syncAllMarketPrices() {
 
   return { success: true, count: successCount };
 }
+
+export async function importHistoricalPrices(
+  assetId: string,
+  data: Array<{ date: string; price: string }>
+) {
+  if (!assetId || !data || data.length === 0) {
+    return { success: false, error: '參數不完整' };
+  }
+
+  let successCount = 0;
+  let errorCount = 0;
+
+  for (const row of data) {
+    try {
+      const parsedDate = row.date.trim();
+      const parsedPrice = row.price.trim();
+
+      if (!parsedDate || !parsedPrice) continue;
+
+      const priceNum = Number(parsedPrice);
+      if (isNaN(priceNum) || priceNum < 0) continue;
+
+      const dateMatch = parsedDate.match(/^(\d{4})-(\d{2})-(\d{2})$/);
+      if (!dateMatch) continue;
+
+      const normalizedDate = `${dateMatch[1]}-${dateMatch[2]}-${dateMatch[3]}`;
+
+      await db
+        .insert(assetPricesHistory)
+        .values({
+          assetId,
+          price: parsedPrice,
+          date: normalizedDate,
+        })
+        .onConflictDoUpdate({
+          target: [assetPricesHistory.assetId, assetPricesHistory.date],
+          set: { price: parsedPrice },
+        });
+
+      successCount++;
+    } catch (error) {
+      errorCount++;
+      console.warn(`[批量導入] 導入 ${row.date} 失敗:`, error);
+    }
+  }
+
+  revalidatePath('/dashboard');
+  revalidatePath('/dashboard/assets');
+
+  return {
+    success: true,
+    imported: successCount,
+    errors: errorCount,
+  };
+}