diff --git a/.isort.cfg b/.isort.cfg
index 3d282d0d..74fbd2e1 100644
--- a/.isort.cfg
+++ b/.isort.cfg
@@ -1,3 +1,3 @@
 [settings]
 sections=FUTURE, STDLIB, FIRSTPARTY, THIRDPARTY, LOCALFOLDER
-KNOWN_FIRST_PARTY=jinja2, lml, pyecharts_javascripthon, PIL, pandas, numpy
+KNOWN_FIRST_PARTY=jinja2, lml, pandas, numpy, nose, mock
diff --git a/docs/en-us/charts_base.md b/docs/en-us/charts_base.md
index 821e71c4..90f7d246 100644
--- a/docs/en-us/charts_base.md
+++ b/docs/en-us/charts_base.md
@@ -1305,7 +1305,7 @@ kline.render()
 Line.add() signatures
 ```python
 add(name, x_axis, y_axis, is_symbol_show=True, is_smooth=False, is_stack=False,
-    is_step=False, is_fill=False, **kwargs)
+    is_step=False, **kwargs)
 ```
 * name -> str  
     Series name used for displaying in tooltip and filtering with legend,or updaing data and configuration with setOption.
@@ -1332,10 +1332,6 @@ add(name, x_axis, y_axis, is_symbol_show=True, is_smooth=False, is_stack=False,
     default -> False  
     Whether to show as a step line.It can be true, false. Or 'start', 'middle', 'end'.Which will configure the turn point of step line.
 
-* is_fill -> bool  
-    default -> False  
-    Whether to fill area.
-
 ```python
 from pyecharts import Line
 
@@ -1365,7 +1361,6 @@ line.render()
 line = Line("折线图-数据堆叠示例")
 line.add("商家A", attr, v1, is_stack=True, is_label_show=True)
 line.add("商家B", attr, v2, is_stack=True, is_label_show=True)
-line.show_config()
 line.render()
 ```
 ![line-demo](https://user-images.githubusercontent.com/19553554/35089965-4f880100-fc73-11e7-9861-c43bd4d4bbe1.gif)
@@ -1373,16 +1368,15 @@ line.render()
 ```python
 line = Line("折线图-阶梯图示例")
 line.add("商家A", attr, v1, is_step=True, is_label_show=True)
-line.show_config()
 line.render()
 ```
 ![line-demo](https://user-images.githubusercontent.com/19553554/35089968-510f3304-fc73-11e7-9159-67ce6ace9fa3.png)
 
+**area_opacity：** Opacity of the component. Supports value from 0 to 1, and the component will not be drawn when set to 0.
 ```python
 line = Line("折线图-面积图示例")
 line.add("商家A", attr, v1, is_fill=True, line_opacity=0.2, area_opacity=0.4, symbol=None)
 line.add("商家B", attr, v2, is_fill=True, area_color='#000', area_opacity=0.3, is_smooth=True)
-line.show_config()
 line.render()
 ```
 ![line-demo](https://user-images.githubusercontent.com/19553554/35089973-53868fd8-fc73-11e7-8ff6-bfb452954267.png)
diff --git a/docs/zh-cn/changelog.md b/docs/zh-cn/changelog.md
index ccd7b332..b73042db 100644
--- a/docs/zh-cn/changelog.md
+++ b/docs/zh-cn/changelog.md
@@ -4,6 +4,9 @@
 
     #### Updated
     * 将 pyecharts-javascripthon 合并入主仓库，并对该部分代码进行了重构。导入路径由 `from pyecharts_javascripthon import *` 转变为 `from pyecharts.javascripthon import *`
+    
+    ### Removed
+    * [issue#762](https://github.com/pyecharts/pyecharts/issues/762) 移除 `is_fill` 配置项，使用 `area_opacity` 指定区域透明度。
 
 
 * ### version 0.5.11 - 2018.9.9（current）
diff --git a/docs/zh-cn/charts_base.md b/docs/zh-cn/charts_base.md
index 6825996e..6f14ffde 100644
--- a/docs/zh-cn/charts_base.md
+++ b/docs/zh-cn/charts_base.md
@@ -1426,8 +1426,7 @@ add(name, x_axis, y_axis,
     is_symbol_show=True,
     is_smooth=False,
     is_stack=False,
-    is_step=False,
-    is_fill=False, **kwargs)
+    is_step=False, **kwargs)
 ```
 * name -> str  
     图例名称
@@ -1444,8 +1443,6 @@ add(name, x_axis, y_axis,
 * is_step -> bool/str  
     是否是阶梯线图。可以设置为 True 显示成阶梯线图。默认为 False  
     也支持设置成'start', 'middle', 'end'分别配置在当前点，当前点与下个点的中间下个点拐弯。
-* is_fill -> bool  
-    是否填充曲线所绘制面积，默认为 False
 
 ```python
 from pyecharts import Line
@@ -1517,13 +1514,13 @@ line.render()
 ```
 ![line-demo](https://user-images.githubusercontent.com/19553554/35089968-510f3304-fc73-11e7-9159-67ce6ace9fa3.png)
 
+**使用 area_opacity：** area_opacity 用于指定区域透明度，0 为完全不透明（默认），1 为完全透明。
 ```python
 line = Line("折线图-面积图示例")
 line.add(
     "商家A",
     attr,
     v1,
-    is_fill=True,
     line_opacity=0.2,
     area_opacity=0.4,
     symbol=None,
diff --git a/format_code.sh b/format_code.sh
index f1b3046e..96f0ca0b 100644
--- a/format_code.sh
+++ b/format_code.sh
@@ -1,3 +1,2 @@
 isort $(find pyecharts -name "*.py"|xargs echo) $(find test -name "*.py"|xargs echo) setup.py
 black -l 79 pyecharts test
-
diff --git a/pyecharts/chart.py b/pyecharts/chart.py
index 25c8829f..674ea44c 100644
--- a/pyecharts/chart.py
+++ b/pyecharts/chart.py
@@ -206,7 +206,6 @@ class Chart(Base):
         is_convert=None,
         is_datazoom_show=None,
         is_datazoom_extra_show=None,
-        is_fill=None,
         is_focusnode=None,
         is_geo_effect_show=None,
         is_grid3d_rotate=None,
diff --git a/pyecharts/charts/line.py b/pyecharts/charts/line.py
index f8edf7db..5b5b15a7 100644
--- a/pyecharts/charts/line.py
+++ b/pyecharts/charts/line.py
@@ -27,7 +27,6 @@ class Line(Chart):
         is_smooth=False,
         is_stack=False,
         is_step=False,
-        is_fill=False,
         **kwargs
     ):
         """
@@ -48,8 +47,6 @@ class Line(Chart):
             是否是阶梯线图。可以设置为 True 显示成阶梯线图。默认为 False。
             也支持设置成'start', 'middle', 'end'分别配置在当前点，当前点与下个
             点的中间下个点拐弯。
-        :param is_fill:
-            是否填充曲线所绘制面积，默认为 False。
         :param kwargs:
         """
         assert len(x_axis) == len(y_axis)
diff --git a/test/test_bar3D.py b/test/test_bar3D.py
index b5d59ee0..55990b16 100644
--- a/test/test_bar3D.py
+++ b/test/test_bar3D.py
@@ -5,6 +5,7 @@ from __future__ import unicode_literals
 from test.constants import RANGE_COLOR, X_TIME, Y_WEEK
 
 from nose.tools import eq_
+
 from pyecharts import Bar3D
 
 data = [
diff --git a/test/test_base.py b/test/test_base.py
index 6d369815..82b5d8a4 100644
--- a/test/test_base.py
+++ b/test/test_base.py
@@ -9,11 +9,10 @@ from test.utils import get_default_rendering_file_content
 
 import numpy as np
 import pandas as pd
-
-import pyecharts.exceptions as exceptions
 from mock import MagicMock, patch
 from nose.tools import eq_, raises
-from pyecharts import Bar, Map, jupyter_image, online
+
+from pyecharts import Bar, Map, exceptions, jupyter_image, online
 from pyecharts.conf import CURRENT_CONFIG
 
 TITLE = "柱状图数据堆叠示例"
diff --git a/test/test_chart_properties.py b/test/test_chart_properties.py
index ae915856..5b8056a4 100644
--- a/test/test_chart_properties.py
+++ b/test/test_chart_properties.py
@@ -6,6 +6,7 @@ from __future__ import unicode_literals
 from test.constants import CLOTHES, WEEK
 
 from nose.tools import eq_
+
 from pyecharts import Bar, Grid, Line
 from pyecharts.base import Base
 
diff --git a/test/test_conf.py b/test/test_conf.py
index 4974e955..fe1dcae3 100644
--- a/test/test_conf.py
+++ b/test/test_conf.py
@@ -7,6 +7,7 @@ Test Target: js_embed (should render <script> in embed mode)
 from __future__ import unicode_literals
 
 from nose.tools import eq_, raises
+
 from pyecharts.conf import PyEchartsConfig, _ensure_echarts_is_in_the_front
 
 
diff --git a/test/test_constants.py b/test/test_constants.py
index 07afeaad..41322540 100644
--- a/test/test_constants.py
+++ b/test/test_constants.py
@@ -2,9 +2,10 @@
 
 from __future__ import unicode_literals
 
-import pyecharts.conf as conf
 from nose.tools import eq_
 
+import pyecharts.conf as conf
+
 DEFAULT_JS_LIBRARIES = dict(
     echarts="echarts.min",
     echartsgl="echarts-gl.min",
diff --git a/test/test_coordinate_dataset.py b/test/test_coordinate_dataset.py
index 7b2d6d75..4bbcc81f 100644
--- a/test/test_coordinate_dataset.py
+++ b/test/test_coordinate_dataset.py
@@ -5,6 +5,7 @@ Test Case for the acccess interface of coordinate dataset
 from __future__ import unicode_literals
 
 from nose.tools import assert_dict_equal, eq_, raises
+
 from pyecharts.datasets.coordinates import (
     GEO_DATA_BANK,
     DefaultChinaDataBank,
diff --git a/test/test_geo.py b/test/test_geo.py
index ac41abf0..c2441a61 100644
--- a/test/test_geo.py
+++ b/test/test_geo.py
@@ -3,6 +3,7 @@
 from __future__ import unicode_literals
 
 from nose.tools import assert_raises, raises
+
 from pyecharts import Geo, Style
 
 style = Style(
diff --git a/test/test_geolines.py b/test/test_geolines.py
index 1aace476..048f2bff 100644
--- a/test/test_geolines.py
+++ b/test/test_geolines.py
@@ -3,6 +3,7 @@
 from __future__ import unicode_literals
 
 from nose.tools import assert_raises
+
 from pyecharts import GeoLines, Style
 from pyecharts.datasets.coordinates import search_coordinates_by_keyword
 
diff --git a/test/test_js_extension.py b/test/test_js_extension.py
index 8c5b33a4..64ba86ca 100644
--- a/test/test_js_extension.py
+++ b/test/test_js_extension.py
@@ -1,8 +1,9 @@
 import os
 
-import pyecharts.exceptions as exceptions
 from mock import patch
 from nose.tools import eq_, raises
+
+from pyecharts import exceptions
 from pyecharts.js_extensions import JsExtension
 
 
diff --git a/test/test_line.py b/test/test_line.py
index e32b4b70..d4051fe5 100644
--- a/test/test_line.py
+++ b/test/test_line.py
@@ -99,7 +99,7 @@ def test_line_type_step():
     assert '"step": true' in line._repr_html_()
 
 
-def test_line_type_fil():
+def test_line_type_fill():
     line = Line("折线图-面积图示例")
     line.add(
         "商家A",
diff --git a/test/test_line3D.py b/test/test_line3D.py
index 4105fbcb..a5e1efbb 100644
--- a/test/test_line3D.py
+++ b/test/test_line3D.py
@@ -6,6 +6,7 @@ import math
 from test.constants import RANGE_COLOR
 
 from nose.tools import eq_
+
 from pyecharts import Line3D
 
 
diff --git a/test/test_options.py b/test/test_options.py
index a244543a..61404da9 100644
--- a/test/test_options.py
+++ b/test/test_options.py
@@ -7,6 +7,7 @@ from test.utils import get_fixture_content
 
 from mock import patch
 from nose.tools import eq_
+
 from pyecharts import (
     Bar,
     Bar3D,
diff --git a/test/test_page.py b/test/test_page.py
index e06e3cd4..0f8bf61f 100644
--- a/test/test_page.py
+++ b/test/test_page.py
@@ -9,6 +9,7 @@ from test.constants import CLOTHES, RANGE_COLOR, WEEK
 
 from mock import MagicMock
 from nose.tools import assert_list_equal, eq_, raises
+
 from pyecharts import (
     Bar,
     Kline,
diff --git a/test/test_scatter3D.py b/test/test_scatter3D.py
index c1911811..f314d9d7 100644
--- a/test/test_scatter3D.py
+++ b/test/test_scatter3D.py
@@ -4,6 +4,7 @@ from __future__ import unicode_literals
 from test.constants import RANGE_COLOR
 
 from nose.tools import eq_
+
 from pyecharts import Scatter3D
 
 
diff --git a/test/test_surface3D.py b/test/test_surface3D.py
index 44dd5536..6e9c0cff 100644
--- a/test/test_surface3D.py
+++ b/test/test_surface3D.py
@@ -6,6 +6,7 @@ import math
 from test.constants import RANGE_COLOR
 
 from nose.tools import eq_
+
 from pyecharts import Surface3D
 
 
diff --git a/test/test_template_function.py b/test/test_template_function.py
index 203349c0..6571b16f 100644
--- a/test/test_template_function.py
+++ b/test/test_template_function.py
@@ -6,6 +6,7 @@ Test cases for jinja2 template functions
 from __future__ import unicode_literals
 
 from nose.tools import raises
+
 from pyecharts import Bar, Map
 from pyecharts.conf import PyEchartsConfig
 from pyecharts.engine import BaseEnvironment, EchartsEnvironment
diff --git a/test/test_utils.py b/test/test_utils.py
index d99f65e5..b3971717 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -5,6 +5,7 @@ import codecs
 import os
 
 from nose.tools import eq_
+
 from pyecharts.utils import (
     NULL,
     get_resource_dir,