diff --git a/docs/tools/easy_diff.py b/docs/tools/easy_diff.py
new file mode 100755
index 00000000000..d8a596f36ba
--- /dev/null
+++ b/docs/tools/easy_diff.py
@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import os, sys
+import subprocess
+from git import cmd
+from tempfile import NamedTemporaryFile
+
+SCRIPT_PATH = os.path.abspath(__file__)
+CLICK_HOUSE_REPO_HOME = os.path.join(os.path.dirname(SCRIPT_PATH), '../../')
+
+
+def diffFile(reference_file, working_file, git, temp_diff):
+    if os.path.islink(working_file):
+        print "Need translate document:" + reference_file
+
+    if not os.path.exists(working_file):
+        print 'Need link document ' + reference_file + ' to ' + working_file
+
+    if os.path.exists(working_file) and not os.path.islink(working_file):
+        git_hash = git.execute(['git', 'log', '-n', '1', '--pretty=format:"%H"', working_file])
+        temp_diff.write(git.execute(['git', 'diff', git_hash.strip('"'), reference_file]).encode('utf-8'))
+        temp_diff.write('\n'.encode('utf-8'))
+
+    return 0
+
+
+def diffDirectory(reference_directory, working_directory, git, temp_diff):
+    if not os.path.isdir(reference_directory):
+        raise RuntimeError('The [' + reference_directory + '] is not directory.')
+
+    for list_item in os.listdir(reference_directory):
+        working_item = os.path.join(working_directory, list_item)
+        reference_item = os.path.join(reference_directory, list_item)
+        if diffFile(reference_item, working_item, git, temp_diff) if os.path.isfile(reference_item) else diffDirectory(reference_item, working_item, git, temp_diff) != 0:
+            return 1
+
+    return 0
+
+
+def findLanguageDoc(custom_document, other_language='en', children=[]):
+    if len(custom_document) == 0:
+        raise RuntimeError('The ' + os.path.join(custom_document, *children) + " is not in docs directory.")
+
+    if os.path.samefile(os.path.join(CLICK_HOUSE_REPO_HOME, 'docs'), custom_document):
+        return os.path.join(CLICK_HOUSE_REPO_HOME, 'docs', other_language, *children[1:])
+    children.insert(0, os.path.split(custom_document)[1])
+    return findLanguageDoc(os.path.split(custom_document)[0], other_language, children)
+
+
+if __name__ == '__main__':
+    git = cmd.Git(CLICK_HOUSE_REPO_HOME)
+    git_pager = git.execute(['git', 'var', 'GIT_PAGER'])
+    working_language = os.path.join(CLICK_HOUSE_REPO_HOME, 'docs', sys.argv[1])
+
+    reference_language = findLanguageDoc(working_language)
+    with NamedTemporaryFile(mode='r+') as temp_diff:
+        if not os.path.isdir(reference_language):
+            diffFile(reference_language, working_language, git, temp_diff)
+        else:
+            diffDirectory(reference_language, working_language, git, temp_diff)
+
+        temp_diff.flush()
+        subprocess.check_call([git_pager, temp_diff.name])
diff --git a/docs/tools/requirements.txt b/docs/tools/requirements.txt
index 2c395da402c..d95ddee9452 100644
--- a/docs/tools/requirements.txt
+++ b/docs/tools/requirements.txt
@@ -33,3 +33,4 @@ tornado==5.1
 typing==3.6.2
 Unidecode==1.0.23
 urllib3==1.24.2
+gitpython==2.1.14