diff --git a/debug/accuracy_tools/api_accuracy_checker/common/base_api.py b/debug/accuracy_tools/api_accuracy_checker/common/base_api.py
index 4d1ebff9198f1707bf76555801fd4df154ca8d98..e76250d1dd3af806a3dc87d6fe531da25f216329 100644
--- a/debug/accuracy_tools/api_accuracy_checker/common/base_api.py
+++ b/debug/accuracy_tools/api_accuracy_checker/common/base_api.py
@@ -3,6 +3,7 @@ import torch
 from api_accuracy_checker.common.utils import print_error_log, write_pt, create_directory
 from ptdbg_ascend.src.python.ptdbg_ascend.common.utils import check_path_before_create
 from api_accuracy_checker.common.config import msCheckerConfig
+from api_accuracy_checker.dump.dump_utils import DumpUtil
 
 
 class BaseAPIInfo:
@@ -55,7 +56,6 @@ class BaseAPIInfo:
             single_arg.update({'requires_grad': arg.requires_grad})
         else:
             api_args = self.api_name + '.' + str(self.args_num)
-            from api_accuracy_checker.dump.dump import DumpUtil
             step_dir = "step" + str(DumpUtil.call_num - 1 if msCheckerConfig.enable_dataloader else DumpUtil.call_num)
             rank_dir = f"rank{self.rank}"
             if self.is_forward:
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py b/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py
index f3e3fe66364169f8d1617acfd378905e225a52d2..8a25a2463dc7ea1b3b9d913abfec8f233b1dbd5c 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/__init__.py
@@ -1,5 +1,4 @@
-from api_accuracy_checker.dump.dump import set_dump_switch
 import api_accuracy_checker.dump.dump_scope 
 from api_accuracy_checker.common.config import msCheckerConfig
 
-__all__ = ['set_dump_switch']
+__all__ = []
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/dump.py b/debug/accuracy_tools/api_accuracy_checker/dump/dump.py
index a3a8fee7472c48e3df19f4dabd326071e5465dd5..4b3516fd574ab9330814472295148b0dcaafba37 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/dump.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/dump.py
@@ -20,6 +20,7 @@ from api_accuracy_checker.dump.info_dump import write_api_info_json, initialize_
 from api_accuracy_checker.common.utils import print_error_log, CompareException
 from api_accuracy_checker.hook_module.register_hook import initialize_hook
 from api_accuracy_checker.common.config import msCheckerConfig
+from api_accuracy_checker.dump.dump_utils import DumpUtil, DumpConst
 
 
 def set_dump_switch(switch):
@@ -32,6 +33,15 @@ def set_dump_switch(switch):
     DumpUtil.set_dump_switch(switch)
 
 
+def incr_iter_num_maybe_exit():
+    if DumpUtil.call_num in msCheckerConfig.target_iter:
+        set_dump_switch("ON")
+    elif DumpUtil.call_num > max(msCheckerConfig.target_iter):
+        raise Exception("Model pretest: exit after iteration {}".format(DumpUtil.call_num - 1))
+    else:
+        set_dump_switch("OFF")
+
+
 def check_dataloader_status():
     if msCheckerConfig.enable_dataloader:
         error_info = ("If you want to use this  function, set enable_dataloader "
@@ -56,34 +66,6 @@ def step():
     DumpUtil.call_num += 1
 
 
-class DumpUtil(object):
-    dump_switch = None
-    call_num = 0
-
-    @staticmethod
-    def set_dump_switch(switch):
-        DumpUtil.dump_switch = switch
-
-    @staticmethod
-    def get_dump_switch():
-        return DumpUtil.dump_switch == "ON"
-
-    @staticmethod
-    def incr_iter_num_maybe_exit():
-        if DumpUtil.call_num in msCheckerConfig.target_iter:
-            set_dump_switch("ON")
-        elif DumpUtil.call_num > max(msCheckerConfig.target_iter):
-            raise Exception("Model pretest: exit after iteration {}".format(DumpUtil.call_num - 1))
-        else:
-            set_dump_switch("OFF")
-
-
-class DumpConst:
-    delimiter = '*'
-    forward = 'forward'
-    backward = 'backward'
-
-
 def pretest_info_dump(name, out_feat, module, phase):
     if not DumpUtil.get_dump_switch():
         return
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/dump_scope.py b/debug/accuracy_tools/api_accuracy_checker/dump/dump_scope.py
index a297e7235f7b7a196112d8fa857513c4d5027f03..e2edc15bc6da4712db0aafffea75adf1e5b458fb 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/dump_scope.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/dump_scope.py
@@ -1,7 +1,8 @@
 # dump范围控制
 import torch 
 from torch.utils.data.dataloader import _BaseDataLoaderIter 
-from api_accuracy_checker.dump.dump import DumpUtil 
+from api_accuracy_checker.dump.dump_utils import DumpUtil
+from api_accuracy_checker.dump.dump import incr_iter_num_maybe_exit
 from api_accuracy_checker.common.config import msCheckerConfig
 
 
@@ -9,7 +10,7 @@ def iter_tracer(func):
     def func_wrapper(*args, **kwargs):
         DumpUtil.dump_switch = "OFF"
         result = func(*args, **kwargs)
-        DumpUtil.incr_iter_num_maybe_exit()
+        incr_iter_num_maybe_exit()
         DumpUtil.call_num += 1
         return result 
     return func_wrapper
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/dump_utils.py b/debug/accuracy_tools/api_accuracy_checker/dump/dump_utils.py
new file mode 100644
index 0000000000000000000000000000000000000000..1ab8bdeace4fd797b56fd46f2b3fe5f4092cced7
--- /dev/null
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/dump_utils.py
@@ -0,0 +1,17 @@
+class DumpUtil(object):
+    dump_switch = None
+    call_num = 0
+
+    @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'
\ No newline at end of file
diff --git a/debug/accuracy_tools/api_accuracy_checker/dump/info_dump.py b/debug/accuracy_tools/api_accuracy_checker/dump/info_dump.py
index 70d49251f060f88477695d54f2efef776d776334..3177497cde312727a3177837c0b3a5b5ec5572e4 100644
--- a/debug/accuracy_tools/api_accuracy_checker/dump/info_dump.py
+++ b/debug/accuracy_tools/api_accuracy_checker/dump/info_dump.py
@@ -7,6 +7,7 @@ from api_accuracy_checker.dump.api_info import ForwardAPIInfo, BackwardAPIInfo
 from api_accuracy_checker.common.utils import check_file_or_directory_path, initialize_save_path, create_directory
 from ptdbg_ascend.src.python.ptdbg_ascend.common.utils import check_path_before_create
 from api_accuracy_checker.common.config import msCheckerConfig
+from api_accuracy_checker.dump.dump_utils import DumpUtil
 
 
 from ptdbg_ascend.src.python.ptdbg_ascend.common.file_check_util import FileOpen, FileCheckConst, FileChecker
@@ -15,7 +16,6 @@ lock = threading.Lock()
 
 
 def write_api_info_json(api_info):
-    from api_accuracy_checker.dump.dump import DumpUtil
     dump_path = msCheckerConfig.dump_path
     dump_path = os.path.join(msCheckerConfig.dump_path, "step" + str((DumpUtil.call_num - 1) if msCheckerConfig.enable_dataloader else DumpUtil.call_num)) 
     check_path_before_create(dump_path)