diff --git a/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java b/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java
index f457a69567626f3a8c9b4e852e877976b07d9a13..3ec440bc882bb55b014d567bda8f8447a338955d 100644
--- a/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java
+++ b/logging/src/main/java/org/apache/rocketmq/logging/inner/LoggingBuilder.java
@@ -1201,7 +1201,7 @@ public class LoggingBuilder {
         public String format(LoggingEvent event) {
 
             StringBuilder sb = new StringBuilder();
-            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,sss");
+            SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss,SSS");
             String format = simpleDateFormat.format(new Date(event.timeStamp));
             sb.append(format);
             sb.append(" ");