diff --git a/services/services/monitor/server/monitor_server.cpp b/services/services/monitor/server/monitor_server.cpp
index 71a04fb7e708df12bc0cde9d5f76022aec22cd29..6f640f0b637a6aef8c9b56fff21af99e780b5527 100644
--- a/services/services/monitor/server/monitor_server.cpp
+++ b/services/services/monitor/server/monitor_server.cpp
@@ -298,7 +298,7 @@ void MonitorServer::MonitorThread()
                 break;
             }
 
-            waitTime = static_cast<int32_t>(GetTimeMS() - timeStart);
+            waitTime = GetTimeMS() >= timeStart ? static_cast<int32_t>(GetTimeMS() - timeStart) : 0;
 
             for (auto it = timesMap_.begin(); it != timesMap_.end(); it++) {
                 MEDIA_LOGD("pid %{public}d, waitTime %{public}d, timeout %{public}d, trigger %{public}d",