diff --git a/test/saver/test_config_saver.py b/test/saver/test_config_saver.py
index 064b66fa..18447c90 100644
--- a/test/saver/test_config_saver.py
+++ b/test/saver/test_config_saver.py
@@ -1,6 +1,8 @@
 import os
 
 import unittest
+import configparser
+import json
 
 from fastNLP.loader.config_loader import ConfigSection, ConfigLoader
 from fastNLP.saver.config_saver import ConfigSaver
@@ -8,14 +10,73 @@ from fastNLP.saver.config_saver import ConfigSaver
 
 class TestConfigSaver(unittest.TestCase):
     def test_case_1(self):
-        config_saver = ConfigSaver("./test/loader/config")
-        #config_saver = ConfigSaver("./../loader/config")
+        config_file_dir = "./../loader/"
+        config_file_name = "config"
+        config_file_path = os.path.join(config_file_dir, config_file_name)
+
+        tmp_config_file_path = os.path.join(config_file_dir, "tmp_config")
+
+        with open(config_file_path, "r") as f:
+            lines = f.readlines()
+
+        standard_section = ConfigSection()
+        t_section = ConfigSection()
+        ConfigLoader(config_file_path).load_config(config_file_path, {"test": standard_section, "t": t_section})
+
+        config_saver = ConfigSaver(config_file_path)
 
         section = ConfigSection()
-        section["test"] = 105
+        section["doubles"] = 0.8
         section["tt"] = 0.5
+        section["test"] = 105
         section["str"] = "this is a str"
+
+        test_case_2_section = section
+        test_case_2_section["double"] = 0.5
+
+        for k in section.__dict__.keys():
+            standard_section[k] = section[k]
+
         config_saver.save_config_file("test", section)
         config_saver.save_config_file("another-test", section)
         config_saver.save_config_file("one-another-test", section)
+        config_saver.save_config_file("test-case-2", section)
+
+        test_section = ConfigSection()
+        at_section = ConfigSection()
+        another_test_section = ConfigSection()
+        one_another_test_section = ConfigSection()
+        a_test_case_2_section = ConfigSection()
+
+        ConfigLoader(config_file_path).load_config(config_file_path, {"test": test_section,
+                                                                      "another-test": another_test_section,
+                                                                      "t": at_section,
+                                                                      "one-another-test": one_another_test_section,
+                                                                      "test-case-2": a_test_case_2_section})
+
+        assert test_section == standard_section
+        assert at_section == t_section
+        assert another_test_section == section
+        assert one_another_test_section == section
+        assert a_test_case_2_section == test_case_2_section
+
+        config_saver.save_config_file("test", section)
+
+        with open(config_file_path, "w") as f:
+            f.writelines(lines)
+
+        with open(tmp_config_file_path, "w") as f:
+            f.write('[test]\n')
+            f.write('this is an fault example\n')
+
+        tmp_config_saver = ConfigSaver(tmp_config_file_path)
+        try:
+            tmp_config_saver._read_section()
+        except Exception as e:
+            pass
+        os.remove(tmp_config_file_path)
 
+        try:
+            tmp_config_saver = ConfigSaver("file-NOT-exist")
+        except Exception as e:
+            pass