diff --git a/frontend/src/views/backtest/PortfolioBacktest.vue b/frontend/src/views/backtest/PortfolioBacktest.vue
index 2ec20cf..49c7abe 100644
--- a/frontend/src/views/backtest/PortfolioBacktest.vue
+++ b/frontend/src/views/backtest/PortfolioBacktest.vue
@@ -65,7 +65,7 @@ function renderEquity(): void {
 onMounted(() => {
   // 等 dom 挂载后渲染(若有初始数据)
 })
-watch(equityCurve, renderEquity, { deep: true })
+watch(equityCurve, renderEquity, { deep: true, flush: 'post' })
 
 function fmtPct(v: number | null | undefined): string {
   if (v === null || v === undefined || !Number.isFinite(v)) return '-'