diff --git a/fastNLP/loader/config_loader.py b/fastNLP/loader/config_loader.py
index 20d791c4..94871222 100644
--- a/fastNLP/loader/config_loader.py
+++ b/fastNLP/loader/config_loader.py
@@ -92,8 +92,40 @@ class ConfigSection(object):
         setattr(self, key, value)
 
     def __contains__(self, item):
+        """
+        :param item: The key of item.
+        :return: True if the key in self.__dict__.keys() else False.
+        """
         return item in self.__dict__.keys()
 
+    def __eq__(self, other):
+        """Overwrite the == operator
+
+        :param other: Another ConfigSection() object which to be compared.
+        :return: True if value of each key in each ConfigSection() object are equal to the other, else False.
+        """
+        for k in self.__dict__.keys():
+            if k not in other.__dict__.keys():
+                return False
+            if getattr(self, k) != getattr(self, k):
+                return False
+
+        for k in other.__dict__.keys():
+            if k not in self.__dict__.keys():
+                return False
+            if getattr(self, k) != getattr(self, k):
+                return False
+
+        return True
+
+    def __ne__(self, other):
+        """Overwrite the != operator
+
+        :param other:
+        :return:
+        """
+        return not self.__eq__(other)
+
     @property
     def data(self):
         return self.__dict__