diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py b/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py
index d2c12a0e52d3a93c9f0c1b9ff87a6d1feac5e033..73ec7988532c71009da691851e68d163dbe8dbfb 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py
@@ -1,10 +1,4 @@
-from api_accuracy_checker.hook_module.register_hook import initialize_hook
-from api_accuracy_checker.dump.dump import pretest_hook
-from api_accuracy_checker.dump.info_dump import initialize_output_json
 from api_accuracy_checker.dump.utils import set_dump_switch
 
 
-initialize_hook(pretest_hook)
-initialize_output_json()
-
-__all__ = ['set_dump_switch', 'msCheckerConfig']
\ No newline at end of file
+__all__ = ['set_dump_switch']
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/dump.py b/debug/accuracy_tools/api_accuracy_checker/dump/dump.py
index e69c4b50ef548b51a816f5a5c2bfd9c50b4ae2e4..8098f25db0b7f60f4a75d3514bd6b16b8ed0bc18 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/dump.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/dump.py
@@ -25,12 +25,37 @@ import threading
 
 
 from api_accuracy_checker.dump.api_info import ForwardAPIInfo, BackwardAPIInfo
-from api_accuracy_checker.dump.info_dump import write_api_info_json 
-from api_accuracy_checker.dump.utils import DumpConst, DumpUtil
+from api_accuracy_checker.dump.info_dump import write_api_info_json, initialize_output_json
 from api_accuracy_checker.common.utils import print_warn_log, print_info_log, print_error_log
+from api_accuracy_checker.hook_module.register_hook import initialize_hook
+
+
+def set_dump_switch(switch):
+    if switch == "ON":
+        initialize_hook(pretest_hook)
+        initialize_output_json()
+    DumpUtil.set_dump_switch(switch)
+
+class DumpUtil(object):
+    dump_switch = None
+
+    @staticmethod
+    def set_dump_switch(switch):
+        DumpUtil.dump_switch = switch
+
+    @staticmethod
+    def get_dump_switch():
+        return DumpUtil.dump_switch == "ON"
+
+
+class DumpConst:
+    delimiter = '*'
+    forward = 'forward'
+    backward = 'backward'
+
 
 def pretest_info_dump(name, out_feat, module, phase):
-    if not DumpUtil.dump_switch:
+    if not DumpUtil.get_dump_switch():
         return 
     if phase == DumpConst.forward:
         api_info = ForwardAPIInfo(name, module.input_args, module.input_kwargs)
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/utils.py b/debug/accuracy_tools/api_accuracy_checker/dump/utils.py
index 4a19785b61dd32a7e11f2ea313fab52f8f8cd7d0..93af6f0981aa0bd3d3c42606a50f04b79bc1c37b 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/utils.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/utils.py
@@ -1,15 +1,6 @@
 import os
-import shutil
-import sys
-from pathlib import Path
 import numpy as np
-from api_accuracy_checker.common.utils import print_error_log, CompareException, DumpException, Const, get_time, print_info_log, \
-    check_mode_valid, get_api_name_from_matcher
 
-class DumpConst:
-    delimiter = '*'
-    forward = 'forward'
-    backward = 'backward' 
 
 def create_folder(path):
     if not os.path.exists(path):
@@ -22,17 +13,3 @@ def write_npy(file_path, tensor):
     np.save(file_path, tensor)
     full_path = os.path.abspath(file_path)
     return full_path
-
-def set_dump_switch(switch):
-    DumpUtil.set_dump_switch(switch)
-
-class DumpUtil(object):
-    dump_switch = None
-
-    @staticmethod
-    def set_dump_switch(switch):
-        DumpUtil.dump_switch = switch
-
-    @staticmethod
-    def get_dump_switch():
-        return DumpUtil.dump_switch == "ON"
\ No newline at end of file