diff --git a/.copyright.hook b/.copyright.hook
new file mode 100644
index 0000000000000000000000000000000000000000..0871ae716a7fad16dccb7f7f6164f86c2db6b242
--- /dev/null
+++ b/.copyright.hook
@@ -0,0 +1,121 @@
+from __future__ import absolute_import
+from __future__ import print_function
+from __future__ import unicode_literals
+
+import argparse
+import io, re
+import sys, os
+import subprocess
+import platform
+
+COPYRIGHT = '''
+  Copyright (c) 2019 PaddlePaddle Authors. All Rights Reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+'''
+
+LANG_COMMENT_MARK = None
+
+NEW_LINE_MARK = None
+
+COPYRIGHT_HEADER = None
+
+if platform.system() == "Windows":
+    NEW_LINE_MARK = "\r\n"
+else:
+    NEW_LINE_MARK = '\n'
+    COPYRIGHT_HEADER = COPYRIGHT.split(NEW_LINE_MARK)[1]
+    p = re.search('(\d{4})', COPYRIGHT_HEADER).group(0)
+    process = subprocess.Popen(["date", "+%Y"], stdout=subprocess.PIPE)
+    date, err = process.communicate()
+    date = date.decode("utf-8").rstrip("\n")
+    COPYRIGHT_HEADER = COPYRIGHT_HEADER.replace(p, date)
+
+
+def generate_copyright(template, lang='C'):
+    if lang == 'Python':
+        LANG_COMMENT_MARK = '#'
+    else:
+        LANG_COMMENT_MARK = "//"
+
+    lines = template.split(NEW_LINE_MARK)
+    BLANK = " "
+    ans = LANG_COMMENT_MARK + BLANK + COPYRIGHT_HEADER + NEW_LINE_MARK
+    for lino, line in enumerate(lines):
+        if lino == 0 or lino == 1 or lino == len(lines) - 1: continue
+        if len(line)  == 0:
+            BLANK = ""
+        else:
+            BLANK = " "
+        ans += LANG_COMMENT_MARK + BLANK + line + NEW_LINE_MARK
+
+    return ans + "\n"
+
+
+def lang_type(filename):
+    if filename.endswith(".py"):
+        return "Python"
+    elif filename.endswith(".h"):
+        return "C"
+    elif filename.endswith(".c"):
+        return "C"
+    elif filename.endswith(".hpp"):
+        return "C"
+    elif filename.endswith(".cc"):
+        return "C"
+    elif filename.endswith(".cpp"):
+        return "C"
+    elif filename.endswith(".cu"):
+        return "C"
+    elif filename.endswith(".cuh"):
+        return "C"
+    elif filename.endswith(".go"):
+        return "C"
+    elif filename.endswith(".proto"):
+        return "C"
+    else:
+        print("Unsupported filetype %s", filename)
+        exit(0)
+
+
+PYTHON_ENCODE = re.compile("^[ \t\v]*#.*?coding[:=][ \t]*([-_.a-zA-Z0-9]+)")
+
+
+def main(argv=None):
+    parser = argparse.ArgumentParser(
+        description='Checker for copyright declaration.')
+    parser.add_argument('filenames', nargs='*', help='Filenames to check')
+    args = parser.parse_args(argv)
+
+    retv = 0
+    for filename in args.filenames:
+        fd = io.open(filename, encoding="utf-8")
+        first_line = fd.readline()
+        second_line = fd.readline()
+        if "COPYRIGHT (C)" in first_line.upper(): continue
+        if first_line.startswith("#!") or PYTHON_ENCODE.match(
+                second_line) != None or PYTHON_ENCODE.match(first_line) != None:
+            continue
+        original_contents = io.open(filename, encoding="utf-8").read()
+        new_contents = generate_copyright(
+            COPYRIGHT, lang_type(filename)) + original_contents
+        print('Auto Insert Copyright Header {}'.format(filename))
+        retv = 1
+        with io.open(filename, 'w') as output_file:
+            output_file.write(new_contents)
+
+    return retv
+
+
+if __name__ == '__main__':
+    exit(main())
diff --git a/paddle_hub/commands/run.py b/paddle_hub/commands/run.py
index 3712cca2700a67fba579ea5d30ca4bfed6e20b51..96984f6a1969e002906e9e8195dc68c85fbf060b 100644
--- a/paddle_hub/commands/run.py
+++ b/paddle_hub/commands/run.py
@@ -15,12 +15,14 @@
 from __future__ import absolute_import
 from __future__ import division
 from __future__ import print_function
+
 from paddle_hub.tools.logger import logger
 from paddle_hub.commands.base_command import BaseCommand, ENTRY
-from paddle_hub.data.reader import csv_reader, yaml_reader
+from paddle_hub.io.reader import csv_reader, yaml_reader
 from paddle_hub.module.manager import default_module_manager
 from paddle_hub.tools import utils
 from paddle_hub.tools.arg_helper import add_argument, print_arguments
+
 import paddle_hub as hub
 import argparse
 import os
diff --git a/paddle_hub/hub_server.py b/paddle_hub/hub_server.py
index 553e8990eff8e57080eba2fafa0fd8c91425d8a7..1d8293cf25a8958262d81c29928ea85909d90953 100644
--- a/paddle_hub/hub_server.py
+++ b/paddle_hub/hub_server.py
@@ -17,7 +17,7 @@ from __future__ import division
 from __future__ import print_function
 from paddle_hub.tools import utils
 from paddle_hub.tools.downloader import default_downloader
-from paddle_hub.data.reader import csv_reader
+from paddle_hub.io.reader import csv_reader
 import os
 import time
 import paddle_hub as hub
diff --git a/paddle_hub/data/__init__.py b/paddle_hub/io/__init__.py
similarity index 100%
rename from paddle_hub/data/__init__.py
rename to paddle_hub/io/__init__.py
diff --git a/paddle_hub/data/augmentation.py b/paddle_hub/io/augmentation.py
similarity index 100%
rename from paddle_hub/data/augmentation.py
rename to paddle_hub/io/augmentation.py
diff --git a/paddle_hub/data/postprocess.py b/paddle_hub/io/postprocess.py
similarity index 100%
rename from paddle_hub/data/postprocess.py
rename to paddle_hub/io/postprocess.py
diff --git a/paddle_hub/data/preprocess.py b/paddle_hub/io/preprocess.py
similarity index 100%
rename from paddle_hub/data/preprocess.py
rename to paddle_hub/io/preprocess.py
diff --git a/paddle_hub/data/reader.py b/paddle_hub/io/reader.py
similarity index 100%
rename from paddle_hub/data/reader.py
rename to paddle_hub/io/reader.py
diff --git a/paddle_hub/data/type.py b/paddle_hub/io/type.py
similarity index 100%
rename from paddle_hub/data/type.py
rename to paddle_hub/io/type.py
diff --git a/paddle_hub/module/module.py b/paddle_hub/module/module.py
index 5ae672cc6290d2f1a5a0760dd84a5aeac08d9884..751a5056d054a8b7449144fae05d90eafaba667b 100644
--- a/paddle_hub/module/module.py
+++ b/paddle_hub/module/module.py
@@ -23,7 +23,7 @@ from paddle_hub.module import module_desc_pb2
 from paddle_hub.module import check_info_pb2
 from paddle_hub.module.signature import Signature, create_signature
 from paddle_hub.module.checker import ModuleChecker
-from paddle_hub.data.reader import yaml_reader
+from paddle_hub.io.reader import yaml_reader
 from paddle_hub import version
 from paddle_hub.module.base_processor import BaseProcessor
 from shutil import copyfile