diff --git a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/EasyLogger.java b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/EasyLogger.java
index c8e5845ad..4a21173c6 100644
--- a/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/EasyLogger.java
+++ b/apm-sniffer/apm-agent-core/src/main/java/org/apache/skywalking/apm/agent/core/logging/core/EasyLogger.java
@@ -66,7 +66,7 @@ public class EasyLogger implements ILog {
 
     String format(LogLevel level, String message, Throwable t) {
         return StringUtil.join(' ', level.name(),
-            new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()),
+            new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS").format(new Date()),
             targetClass.getSimpleName(),
             ": ",
             message,