diff --git a/frontend/app/globals.css b/frontend/app/globals.css
index 6382e08..deb4ccd 100644
--- a/frontend/app/globals.css
+++ b/frontend/app/globals.css
@@ -23,3 +23,9 @@ body {
   color: var(--foreground);
   font-family: Arial, Helvetica, sans-serif;
 }
+
+/* Hide lightweight-charts watermark */
+.tv-lightweight-charts a[href*="tradingview"],
+.tv-lightweight-charts a[href*="lightweight-charts"] {
+  display: none !important;
+}
diff --git a/frontend/app/kline/page.tsx b/frontend/app/kline/page.tsx
index 804529a..31bf3c2 100644
--- a/frontend/app/kline/page.tsx
+++ b/frontend/app/kline/page.tsx
@@ -38,7 +38,6 @@ function chartOptions(height: number) {
       vertLines: { color: "#f1f5f9" },
       horzLines: { color: "#f1f5f9" },
     },
-    crosshair: { mode: 1 },
     localization: {
       timeFormatter: (ts: number) => {
         // UTC+8 北京时间
@@ -109,6 +108,8 @@ export default function KlinePage() {
         close: b.close,
       })));
       rateChart.timeScale().fitContent();
+      // 隐藏 TradingView 水印
+      rateRef.current.querySelectorAll("a").forEach(a => a.style.display = "none");
 
       // 价格K线
       const priceChart = createChart(priceRef.current, chartOptions(260));
@@ -129,6 +130,8 @@ export default function KlinePage() {
         close: b.price_close,
       })));
       priceChart.timeScale().fitContent();
+      // 隐藏 TradingView 水印
+      priceRef.current.querySelectorAll("a").forEach(a => a.style.display = "none");
 
     } catch (e) {
       console.error(e);