diff --git a/index.html b/index.html
index 236d796..52a2619 100644
--- a/index.html
+++ b/index.html
@@ -285,7 +285,9 @@ function derive(d) {
 
   const bStart = [d.range.start, recharges[0] && recharges[0].date].filter(Boolean).sort()[0];
   let cumSpend = 0, cumIn = 0;
-  const balanceSeries = dayRange(bStart, end).map(dt => {
+  // 充值日期可能晚于最后一天的消耗数据，走势图画到两者中较晚的那天，才和顶部余额一致
+  const bEnd = [end, recharges.length ? recharges[recharges.length - 1].date : end].sort().pop();
+  const balanceSeries = dayRange(bStart, bEnd).map(dt => {
     const spend = r2(rowsOn(dt).reduce((s, r) => s + r.spend, 0));
     const inflow = r2(recharges.filter(x => x.date === dt).reduce((s, x) => s + x.amount, 0));
     cumSpend += spend;