diff --git a/src/actions/asset.ts b/src/actions/asset.ts
index 85a4ad1..3ecb030 100644
--- a/src/actions/asset.ts
+++ b/src/actions/asset.ts
@@ -9,6 +9,7 @@ import { z } from 'zod';
 const createAssetSchema = z.object({
   symbol: z.string().min(1, 'Symbol is required'),
   type: z.enum(['STOCK', 'CRYPTO', 'CASH']),
+  exchange: z.string().optional(),
   baseCurrency: z.string().min(2).max(10),
 });
 
@@ -56,4 +57,4 @@ export async function updateAssetPrice(params: z.infer<typeof updatePriceSchema>
   } catch (error: unknown) {
     throw error;
   }
-}
\ No newline at end of file
+}
diff --git a/src/actions/market.ts b/src/actions/market.ts
index 32c8dfc..1c5a3c8 100644
--- a/src/actions/market.ts
+++ b/src/actions/market.ts
@@ -5,13 +5,16 @@ import { assets } from '@/db/schema';
 import { eq } from 'drizzle-orm';
 import { revalidatePath } from 'next/cache';
 
-const API_KEY = process.env.ALPHA_VANTAGE_API_KEY;
+export function getTencentSymbol(asset: { symbol: string; exchange: string | null }): string {
+  const cleanSymbol = asset.symbol.trim().toUpperCase().replace(/[^0-9A-Z]/g, '');
 
-function generateRandomPrice(currentPrice: string): string {
-  const price = parseFloat(currentPrice);
-  const changePercent = (Math.random() * 4 - 2);
-  const newPrice = price * (1 + changePercent / 100);
-  return newPrice.toFixed(2);
+  switch (asset.exchange) {
+    case 'SSE': return 'sh' + cleanSymbol;
+    case 'SZSE': return 'sz' + cleanSymbol;
+    case 'HKEX': return 'hk' + cleanSymbol;
+    case 'US':
+    default: return 's_us' + cleanSymbol;
+  }
 }
 
 export async function syncAllStockPrices() {
@@ -24,30 +27,24 @@ export async function syncAllStockPrices() {
 
   for (const asset of stockAssets) {
     try {
-      const response = await fetch(`https://www.alphavantage.co/query?function=GLOBAL_QUOTE&symbol=${asset.symbol}&apikey=${API_KEY}`, { cache: 'no-store' });
-      const data = await response.json();
+      const tCode = getTencentSymbol(asset);
+      const response = await fetch(`https://qt.gtimg.cn/q=${tCode}`, { cache: 'no-store' });
+      const text = await response.text();
 
-      if (data['Information'] || data['Note'] || !data['Global Quote']) {
-        throw new Error('Alpha Vantage API 达到频率限制或未找到该股票');
-      }
+      const match = text.match(/="([^"]+)"/);
+      if (match && match[1]) {
+        const dataArr = match[1].split('~');
+        const latestPrice = dataArr[3];
 
-      const priceString = data['Global Quote']['05. price'];
-      if (priceString) {
-        await db
-          .update(assets)
-          .set({ latestPrice: priceString })
-          .where(eq(assets.id, asset.id));
-        successCount++;
+        if (latestPrice && !isNaN(Number(latestPrice)) && Number(latestPrice) > 0) {
+          await db.update(assets)
+            .set({ latestPrice: latestPrice })
+            .where(eq(assets.id, asset.id));
+          successCount++;
+        }
       }
     } catch (error) {
-      console.error(`Failed to fetch price for ${asset.symbol}:`, error);
-      const currentPrice = asset.latestPrice || '0.00';
-      const simulatedPrice = generateRandomPrice(currentPrice);
-      await db
-        .update(assets)
-        .set({ latestPrice: simulatedPrice })
-        .where(eq(assets.id, asset.id));
-      console.warn(`[熔断] ${asset.symbol} 使用波动模拟器更新价格为 ${simulatedPrice}`);
+      console.warn(`[行情引擎] 同步 ${asset.symbol} 失败，保持原价:`, error);
     }
   }
 
diff --git a/src/components/assets/add-asset-dialog.tsx b/src/components/assets/add-asset-dialog.tsx
index 0545ddd..39d36a8 100644
--- a/src/components/assets/add-asset-dialog.tsx
+++ b/src/components/assets/add-asset-dialog.tsx
@@ -37,11 +37,19 @@ import { createAsset } from '@/actions/asset';
 const addAssetSchema = z.object({
   symbol: z.string().min(1, '资产代码不能为空'),
   type: z.enum(['STOCK', 'CRYPTO', 'CASH']),
+  exchange: z.string().optional(),
   baseCurrency: z.string().min(2, '基础币种至少2个字符'),
 });
 
 type AddAssetForm = z.infer<typeof addAssetSchema>;
 
+const EXCHANGE_OPTIONS = [
+  { value: 'US', label: '美股 (US)' },
+  { value: 'HKEX', label: '港股 (HKEX)' },
+  { value: 'SSE', label: '沪市 A 股 (SSE)' },
+  { value: 'SZSE', label: '深市 A 股 (SZSE)' },
+];
+
 export function AddAssetDialog() {
   const [open, setOpen] = useState(false);
   const [isPending, startTransition] = useTransition();
@@ -52,6 +60,7 @@ export function AddAssetDialog() {
     defaultValues: {
       symbol: '',
       type: 'STOCK' as const,
+      exchange: 'US',
       baseCurrency: '',
     },
   });
@@ -117,6 +126,30 @@ export function AddAssetDialog() {
                 </FormItem>
               )}
             />
+            <FormField
+              control={form.control}
+              name="exchange"
+              render={({ field }) => (
+                <FormItem>
+                  <FormLabel>交易所 / 市场 (Exchange)</FormLabel>
+                  <Select onValueChange={field.onChange} defaultValue={field.value}>
+                    <FormControl>
+                      <SelectTrigger>
+                        <SelectValue placeholder="选择交易所" />
+                      </SelectTrigger>
+                    </FormControl>
+                    <SelectContent>
+                      {EXCHANGE_OPTIONS.map((opt) => (
+                        <SelectItem key={opt.value} value={opt.value}>
+                          {opt.label}
+                        </SelectItem>
+                      ))}
+                    </SelectContent>
+                  </Select>
+                  <FormMessage />
+                </FormItem>
+              )}
+            />
             <FormField
               control={form.control}
               name="baseCurrency"
diff --git a/src/db/schema.ts b/src/db/schema.ts
index 3f66c0b..2481fe9 100644
--- a/src/db/schema.ts
+++ b/src/db/schema.ts
@@ -19,6 +19,7 @@ export const assets = pgTable("assets", {
   id: uuid("id").primaryKey().$defaultFn(() => crypto.randomUUID()),
   symbol: varchar("symbol", { length: 20 }).notNull().unique(),
   type: assetTypeEnum("type").notNull(),
+  exchange: varchar("exchange", { length: 10 }).default('US'),
   baseCurrency: varchar("base_currency", { length: 10 }).notNull(),
   latestPrice: numeric("latest_price", { precision: 36, scale: 18 }).default('0').notNull(),
   createdAt: timestamp("created_at", { withTimezone: true, mode: "date" })