diff --git a/web/src/components/ComparisonChart.tsx b/web/src/components/ComparisonChart.tsx
index 56810e0e..600421a3 100644
--- a/web/src/components/ComparisonChart.tsx
+++ b/web/src/components/ComparisonChart.tsx
@@ -92,8 +92,13 @@ export function ComparisonChart({ traders }: ComparisonChartProps) {
           });
         }
 
+        // 计算盈亏百分比：从total_pnl和balance计算
+        // 假设初始余额 = balance - total_pnl
+        const initialBalance = point.balance - point.total_pnl;
+        const pnlPct = initialBalance > 0 ? (point.total_pnl / initialBalance) * 100 : 0;
+
         timestampMap.get(ts)!.traders.set(trader.trader_id, {
-          pnl_pct: point.total_pnl_pct,
+          pnl_pct: pnlPct,
           equity: point.total_equity
         });
       });