diff --git a/src/main/java/com/lzhpo/logger/diff/LoggerDiffFunction.java b/src/main/java/com/lzhpo/logger/diff/LoggerDiffFunction.java
index 777c376..8642d59 100644
--- a/src/main/java/com/lzhpo/logger/diff/LoggerDiffFunction.java
+++ b/src/main/java/com/lzhpo/logger/diff/LoggerDiffFunction.java
@@ -100,6 +100,7 @@ public static DiffObjectResult getDiffObjectResult(Object oldObject, Object newO
 
         Map<String, Field> oldFieldMap = getFieldsMap(oldObjectClass);
         Map<String, Field> newFieldMap = getFieldsMap(newObjectClass);
+        log.debug("Found {} field in old object, found {} field in new object", oldFieldMap.size(), newFieldMap.size());
 
         oldFieldMap.forEach((oldFieldName, oldField) -> {
             Object oldValue = ReflectUtil.getFieldValue(oldObject, oldFieldName);