diff --git a/src/main/java/com/gis/xian/service/impl/IReportOutputServiceImpl.java b/src/main/java/com/gis/xian/service/impl/IReportOutputServiceImpl.java
index 31bc11b..42e88af 100644
--- a/src/main/java/com/gis/xian/service/impl/IReportOutputServiceImpl.java
+++ b/src/main/java/com/gis/xian/service/impl/IReportOutputServiceImpl.java
@@ -299,7 +299,7 @@ public class IReportOutputServiceImpl implements ReportOutputService {
         m.put("报告时间", DateTimeUtils.datetimeFormat(sim.getOccurredTime(), "MM月dd日HH时mm分"));
         m.put("降雨时间", DateTimeUtils.datetimeFormat(sim.getOccurredTime(), "yyyy年MM月dd日HH时"));
         m.put("降雨地区", String.join("、", allDistricts));
-        m.put("持续时间", cond.getDuration() == null ? 72 : cond.getDuration());
+        m.put("持续时间", cond.getDuration() == null ? 24 : cond.getDuration());
         m.put("降雨量", buildRainfallStr(rainData, allDistricts));
         m.put("降雨集中区域", String.join("、", top3Districts));
         m.put("风险区数量", riskCount);