diff --git a/src/App.tsx b/src/App.tsx
index 112d74d..4423ad5 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -2144,6 +2144,13 @@ export default function App() {
   // 调整到下一个工作时间开始点
   const adjustToNextWorkingHour = (date: Date, calculationMethod: string, weekendDays: number[] = [], excludedDates: string[] = []): Date => {
     const result = new Date(date);
+    if (!isBusinessDay(result, weekendDays, excludedDates)) {
+      while (!isBusinessDay(result, weekendDays, excludedDates)) {
+        result.setDate(result.getDate() + 1);
+      }
+      result.setHours(9, 0, 0, 0);
+      return result;
+    }
     
     if (calculationMethod === '内部') {
       const hour = result.getHours();