diff --git a/modules/image/image_processing/enlightengan/enlighten_inference/__init__.py b/modules/image/image_processing/enlightengan/enlighten_inference/__init__.py
deleted file mode 100755
index 5736aafcbcd81bdfdfe284a177005f98495354d3..0000000000000000000000000000000000000000
--- a/modules/image/image_processing/enlightengan/enlighten_inference/__init__.py
+++ /dev/null
@@ -1,37 +0,0 @@
-import os
-from typing import Union
-
-import numpy as np
-from onnxruntime import InferenceSession
-
-
-def get_relative_path(root, *args):
-    return os.path.join(os.path.dirname(root), *args)
-
-
-class EnlightenOnnxModel:
-    def __init__(self, model: Union[bytes, str, None] = None):
-        self.graph = InferenceSession(model or get_relative_path(__file__, 'enlighten.onnx'))
-
-    def __repr__(self):
-        return '<EnlightenGAN OnnxModel> {}'.format(id(self))
-
-    def _pad(self, img):
-        h, w, _ = img.shape
-        block_size = 16
-        min_height = (h // block_size + 1) * block_size
-        min_width = (w // block_size + 1) * block_size
-        img = np.pad(img, ((0, min_height - h), (0, min_width - w), (0, 0)), mode='constant', constant_values=0)
-        return img, (h, w)
-
-    def _preprocess(self, img):
-        if len(img.shape) != 3:
-            raise ValueError('Incorrect shape: expected 3, got {}'.format(img.shape))
-        return np.expand_dims(np.transpose(img, (2, 0, 1)).astype(np.float32) / 255., 0)
-
-    def predict(self, img):
-        padded, (h, w) = self._pad(img)
-        image_numpy, = self.graph.run(['output'], {'input': self._preprocess(padded)})
-        image_numpy = (np.transpose(image_numpy[0], (1, 2, 0)) + 1) / 2.0 * 255.0
-        image_numpy = np.clip(image_numpy, 0, 255)
-        return image_numpy.astype('uint8')[:h, :w, :]
diff --git a/modules/image/image_processing/enlightengan/enlighten_inference/pd_model/x2paddle_code.py b/modules/image/image_processing/enlightengan/enlighten_inference/pd_model/x2paddle_code.py
index 51e7a5e61e669edc72a174cb9db06c95a3e24029..d211efac274f7d6be42ee8a765726526d9e51888 100755
--- a/modules/image/image_processing/enlightengan/enlighten_inference/pd_model/x2paddle_code.py
+++ b/modules/image/image_processing/enlightengan/enlighten_inference/pd_model/x2paddle_code.py
@@ -1,6 +1,5 @@
 import paddle
 import math
-from x2paddle.op_mapper.onnx2paddle import onnx_custom_layer as x2paddle_nn
 
 
 class ONNXModel(paddle.nn.Layer):
diff --git a/modules/image/image_processing/enlightengan/module.py b/modules/image/image_processing/enlightengan/module.py
index eacfaf06e1bbf0ab8c10a3c162512687ec56fe22..30749182bde2f984fb1b73624b01a56010fa4e1d 100644
--- a/modules/image/image_processing/enlightengan/module.py
+++ b/modules/image/image_processing/enlightengan/module.py
@@ -21,7 +21,6 @@ from paddlehub.module.module import moduleinfo, runnable, serving
 import numpy as np
 import cv2
 
-from .enlighten_inference import EnlightenOnnxModel
 from .enlighten_inference.pd_model.x2paddle_code import ONNXModel
 from .util import base64_to_cv2
 
@@ -36,19 +35,19 @@ class EnlightenGAN:
         self.model.set_dict(params, use_structured_name=True)
 
     def enlightening(self,
-                     images=None,
-                     paths=None,
-                     output_dir='./enlightening_result/',
-                     use_gpu=False,
-                     visualization=True):
+                     images:list=None,
+                     paths:list=None,
+                     output_dir:str='./enlightening_result/',
+                     use_gpu:bool=False,
+                     visualization:bool=True):
         '''
         enlighten images in the low-light scene.
 
         images (list[numpy.ndarray]): data of images, shape of each is [H, W, C], color space must be BGR(read by cv2).
         paths (list[str]): paths to images
-        output_dir: the dir to save the results
-        use_gpu: if True, use gpu to perform the computation, otherwise cpu.
-        visualization: if True, save results in output_dir.
+        output_dir (str): the dir to save the results
+        use_gpu (bool): if True, use gpu to perform the computation, otherwise cpu.
+        visualization (bool): if True, save results in output_dir.
         '''
         results = []
         paddle.disable_static()
diff --git a/modules/image/image_processing/enlightengan/requirements.txt b/modules/image/image_processing/enlightengan/requirements.txt
deleted file mode 100644
index 8e095c08f78bd8d5d02bba769dfdb65b54e06c43..0000000000000000000000000000000000000000
--- a/modules/image/image_processing/enlightengan/requirements.txt
+++ /dev/null
@@ -1,2 +0,0 @@
-onnxruntime
-x2paddle