diff --git a/frontend/app/paper/page.tsx b/frontend/app/paper/page.tsx
index e41f194..1fe1afb 100644
--- a/frontend/app/paper/page.tsx
+++ b/frontend/app/paper/page.tsx
@@ -120,15 +120,15 @@ function ActivePositions() {
     f(); const iv = setInterval(f, 10000); return () => clearInterval(iv);
   }, []);
 
-  // WebSocket实时价格
+  // WebSocket实时价格（aggTrade逐笔成交）
   useEffect(() => {
-    const streams = ["btcusdt", "ethusdt", "xrpusdt", "solusdt"].map(s => `${s}@markPrice@1s`).join("/");
+    const streams = ["btcusdt", "ethusdt", "xrpusdt", "solusdt"].map(s => `${s}@aggTrade`).join("/");
     const ws = new WebSocket(`wss://fstream.binance.com/stream?streams=${streams}`);
     ws.onmessage = (e) => {
       try {
         const msg = JSON.parse(e.data);
         if (msg.data) {
-          const sym = msg.data.s; // e.g. "BTCUSDT"
+          const sym = msg.data.s;
           const price = parseFloat(msg.data.p);
           if (sym && price > 0) setWsPrices(prev => ({ ...prev, [sym]: price }));
         }