diff --git a/fastdeploy/libs/__init__.py b/fastdeploy/libs/__init__.py
deleted file mode 100644
index e69de29bb..000000000
diff --git a/fastdeploy/version.py b/fastdeploy/version.py
index 733216b86..16e152c91 100644
--- a/fastdeploy/version.py
+++ b/fastdeploy/version.py
@@ -4,4 +4,4 @@ from __future__ import division
 from __future__ import print_function
 from __future__ import unicode_literals
 version = '0.3.0'
-git_version = '9d87046d78bcfc10c07b1e7a2bccda3914452201'
+git_version = 'b69f13b26846f2e13f6ad3c81f1d4ad3ad81fdbb'
diff --git a/fastdeploy/vision/ppcls/__init__.py b/fastdeploy/vision/ppcls/__init__.py
index e27d1f47a..7eb2bd462 100644
--- a/fastdeploy/vision/ppcls/__init__.py
+++ b/fastdeploy/vision/ppcls/__init__.py
@@ -14,20 +14,20 @@
 
 from __future__ import absolute_import
 import logging
-import fastdeploy as fd
-from fastdeploy import C
+from ... import FastDeployModel, Frontend
+from ... import fastdeploy_main as C
 
 
-class Model(fd.FastDeployModel):
+class Model(FastDeployModel):
     def __init__(self,
                  model_file,
                  params_file,
                  config_file,
                  backend_option=None,
-                 model_format=fd.Frontend.PADDLE):
+                 model_format=Frontend.PADDLE):
         super(Model, self).__init__(backend_option)
 
-        assert model_format == fd.Frontend.PADDLE, "PaddleClas only support model format of Frontend.Paddle now."
+        assert model_format == Frontend.PADDLE, "PaddleClas only support model format of Frontend.Paddle now."
         self._model = C.vision.ppcls.Model(model_file, params_file,
                                            config_file, self._runtime_option,
                                            model_format)
diff --git a/fastdeploy/vision/ultralytics/__init__.py b/fastdeploy/vision/ultralytics/__init__.py
index 9c3ed915c..ebfa0e1ce 100644
--- a/fastdeploy/vision/ultralytics/__init__.py
+++ b/fastdeploy/vision/ultralytics/__init__.py
@@ -14,16 +14,16 @@
 
 from __future__ import absolute_import
 import logging
-import fastdeploy as fd
-from fastdeploy import C
+from ... import FastDeployModel, Frontend
+from ... import fastdeploy_main as C
 
 
-class YOLOv5(fd.FastDeployModel):
+class YOLOv5(FastDeployModel):
     def __init__(self,
                  model_file,
-                 params_file=None,
+                 params_file="",
                  runtime_option=None,
-                 model_format=fd.Frontend.ONNX):
+                 model_format=Frontend.ONNX):
         # 调用基函数进行backend_option的初始化
         # 初始化后的option保存在self._runtime_option
         super(YOLOv5, self).__init__(runtime_option)
diff --git a/fastdeploy/vision/visualize/__init__.py b/fastdeploy/vision/visualize/__init__.py
index 6ed99faa6..384ec2768 100644
--- a/fastdeploy/vision/visualize/__init__.py
+++ b/fastdeploy/vision/visualize/__init__.py
@@ -14,8 +14,7 @@
 
 from __future__ import absolute_import
 import logging
-import fastdeploy as fd
-from fastdeploy import C
+from ... import fastdeploy_main as C
 
 
 def vis_detection(im_data, det_result, line_size=1, font_size=0.5):