diff --git a/op-modules/op-device/src/main/java/com/op/device/service/impl/DevicePDAServiceImpl.java b/op-modules/op-device/src/main/java/com/op/device/service/impl/DevicePDAServiceImpl.java
index 4d95043a8..fb1dc10cf 100644
--- a/op-modules/op-device/src/main/java/com/op/device/service/impl/DevicePDAServiceImpl.java
+++ b/op-modules/op-device/src/main/java/com/op/device/service/impl/DevicePDAServiceImpl.java
@@ -1137,15 +1137,12 @@ public class DevicePDAServiceImpl implements IDevicePDAService {
             } else if (list.getFaultStartTime() != null) {
                 downStartTime = list.getFaultStartTime();
             }
-            LocalDateTime downStart = LocalDateTime.ofInstant(downStartTime.toInstant(), zoneId);
-            LocalDateTime downEnd = LocalDateTime.ofInstant(equRepairWorkOrder.getWorkEndTime().toInstant(), zoneId);
-            LocalDateTime downDateTime = LocalDateTime.from(downStart);
 
-            double downHours = downDateTime.until(downEnd, ChronoUnit.HOURS);
-            double downMinutes = ((downDateTime.until(downEnd, ChronoUnit.MINUTES) * 1.0) % 60) / 60;
-            double downSeconds = ((downDateTime.until(downEnd, ChronoUnit.SECONDS) * 1.0) % 3600) / 3600;
-            double downHour = BigDecimal.valueOf(downHours + downMinutes + downSeconds).setScale(2, BigDecimal.ROUND_HALF_UP).doubleValue();
-            equRepairWorkOrder.setFaultDownTime(String.valueOf(downHour) + "小时");
+            Date workEndTime = equRepairWorkOrder.getWorkEndTime();
+            double diff = BigDecimal.valueOf((workEndTime.getTime() - downStartTime.getTime()))
+                    .divide(BigDecimal.valueOf(3600000), 2, RoundingMode.HALF_UP)
+                    .doubleValue();
+            equRepairWorkOrder.setFaultDownTime(diff + "小时");
         }
 
             //代码注释掉了 改了流程 之前是维修完成后，更改设备状态 和 设备运行报表 现在是审核通过之后，才会扣除