diff --git a/dubbo-monitor-default/src/main/java/com/alibaba/dubbo/monitor/dubbo/DubboMonitor.java b/dubbo-monitor-default/src/main/java/com/alibaba/dubbo/monitor/dubbo/DubboMonitor.java
index 096eab365f..6be72b26a6 100644
--- a/dubbo-monitor-default/src/main/java/com/alibaba/dubbo/monitor/dubbo/DubboMonitor.java
+++ b/dubbo-monitor-default/src/main/java/com/alibaba/dubbo/monitor/dubbo/DubboMonitor.java
@@ -15,8 +15,6 @@
  */
 package com.alibaba.dubbo.monitor.dubbo;
 
-import java.text.SimpleDateFormat;
-import java.util.Date;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentMap;
@@ -80,7 +78,7 @@ public class DubboMonitor implements Monitor {
         if (logger.isInfoEnabled()) {
             logger.info("Send statistics to monitor " + getUrl());
         }
-        String timestamp = new SimpleDateFormat("yyyyMMddHHmmss").format(new Date());
+        String timestamp = String.valueOf(System.currentTimeMillis());
         for (Map.Entry<Statistics, AtomicReference<long[]>> entry : statisticsMap.entrySet()) {
             // 获取已统计数据
             Statistics statistics = entry.getKey();
diff --git a/dubbo-monitor-simple/src/main/java/com/alibaba/dubbo/monitor/simple/SimpleMonitorService.java b/dubbo-monitor-simple/src/main/java/com/alibaba/dubbo/monitor/simple/SimpleMonitorService.java
index bf8c870ba9..3b9614268a 100644
--- a/dubbo-monitor-simple/src/main/java/com/alibaba/dubbo/monitor/simple/SimpleMonitorService.java
+++ b/dubbo-monitor-simple/src/main/java/com/alibaba/dubbo/monitor/simple/SimpleMonitorService.java
@@ -161,8 +161,15 @@ public class SimpleMonitorService implements MonitorService {
         if (POISON_PROTOCOL.equals(statistics.getProtocol())) {
             return;
         }
-        long timestamp = statistics.getParameter(Constants.TIMESTAMP_KEY, System.currentTimeMillis());
-        Date now = new Date(timestamp);
+        String timestamp = statistics.getParameter(Constants.TIMESTAMP_KEY);
+        Date now;
+        if (timestamp == null || timestamp.length() == 0) {
+            now = new Date();
+        } else if (timestamp.length() == "yyyyMMddHHmmss".length()) {
+            now = new SimpleDateFormat("yyyyMMddHHmmss").parse(timestamp);
+        } else {
+            now = new Date(Long.parseLong(timestamp));
+        }
         String day = new SimpleDateFormat("yyyyMMdd").format(now);
         SimpleDateFormat format = new SimpleDateFormat("HHmm");
         for (String key : types) {