diff --git a/.gitignore b/.gitignore
index 66fd13c..cb43a6a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,4 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+*.png
\ No newline at end of file
diff --git a/axis.go b/axis.go
new file mode 100644
index 0000000..50e9f22
--- /dev/null
+++ b/axis.go
@@ -0,0 +1,100 @@
+// MIT License
+
+// Copyright (c) 2021 Tree Xie
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package charts
+
+import (
+	"github.com/wcharczuk/go-chart/v2"
+	"github.com/wcharczuk/go-chart/v2/drawing"
+)
+
+type (
+	// AxisData string
+	XAxis struct {
+		// 'value' 数值轴，适用于连续数据。
+		// 'category' 类目轴，适用于离散的类目数据。为该类型时类目数据可自动从 series.data 或 dataset.source 中取，或者可通过 xAxis.data 设置类目数据。
+		// 'time' 时间轴，适用于连续的时序数据，与数值轴相比时间轴带有时间的格式化，在刻度计算上也有所不同，例如会根据跨度的范围来决定使用月，星期，日还是小时范围的刻度。
+		// 'log' 对数轴。适用于对数数据。
+		Type string
+		Data []string
+	}
+)
+
+const axisStrokeWidth = 1
+
+func GetXAxisAndValues(xAxis XAxis, theme string) (chart.XAxis, []float64) {
+	xValues := make([]float64, len(xAxis.Data))
+	ticks := make([]chart.Tick, len(xAxis.Data))
+	for index, key := range xAxis.Data {
+		f := float64(index)
+		xValues[index] = f
+		ticks[index] = chart.Tick{
+			Value: f,
+			Label: key,
+		}
+	}
+	// TODO
+	if theme == ThemeDark {
+		return chart.XAxis{
+			Ticks: ticks,
+		}, xValues
+	}
+	return chart.XAxis{
+		Ticks: ticks,
+		Style: chart.Style{
+			FontColor:   AxisColorLight,
+			StrokeColor: AxisColorLight,
+			StrokeWidth: axisStrokeWidth,
+		},
+	}, xValues
+}
+
+func GetYAxis(theme string) chart.YAxis {
+	// TODO
+	if theme == ThemeDark {
+		return chart.YAxis{}
+	}
+	strokeColor := drawing.Color{
+		R: 224,
+		G: 230,
+		B: 241,
+		A: 255,
+	}
+	return chart.YAxis{
+
+		AxisType: chart.YAxisSecondary,
+		GridMajorStyle: chart.Style{
+			StrokeColor: strokeColor,
+			StrokeWidth: axisStrokeWidth,
+		},
+		GridMinorStyle: chart.Style{
+			StrokeColor: strokeColor,
+			StrokeWidth: axisStrokeWidth,
+		},
+		Style: chart.Style{
+			FontColor: AxisColorLight,
+			// alpha 0，隐藏
+			StrokeColor: hiddenColor,
+			StrokeWidth: axisStrokeWidth,
+		},
+	}
+}
diff --git a/charts.go b/charts.go
new file mode 100644
index 0000000..89fe750
--- /dev/null
+++ b/charts.go
@@ -0,0 +1,112 @@
+// MIT License
+
+// Copyright (c) 2021 Tree Xie
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package charts
+
+import (
+	"bytes"
+
+	"github.com/wcharczuk/go-chart/v2"
+)
+
+type (
+	Title struct {
+		Text string
+	}
+	Legend struct {
+		Data []string
+	}
+	Option struct {
+		Width  int
+		Height int
+		Theme  string
+		XAxis  XAxis
+		// YAxis  Axis
+		Series []Series
+		Title  Title
+		Legend Legend
+	}
+)
+
+const (
+	ThemeLight = "light"
+	ThemeDark  = "dark"
+)
+
+func render(c *chart.Chart, rp chart.RendererProvider) ([]byte, error) {
+	buf := bytes.Buffer{}
+	err := c.Render(rp, &buf)
+	if err != nil {
+		return nil, err
+	}
+	return buf.Bytes(), nil
+}
+
+func ToPNG(c *chart.Chart) ([]byte, error) {
+	return render(c, chart.PNG)
+}
+
+func ToSVG(c *chart.Chart) ([]byte, error) {
+	return render(c, chart.SVG)
+}
+
+func New(opt Option) *chart.Chart {
+	xAxis, xValues := GetXAxisAndValues(opt.XAxis, opt.Theme)
+
+	legendSize := len(opt.Legend.Data)
+	for index, item := range opt.Series {
+		if len(item.XValues) == 0 {
+			opt.Series[index].XValues = xValues
+		}
+		if index < legendSize && opt.Series[index].Name == "" {
+			opt.Series[index].Name = opt.Legend.Data[index]
+		}
+	}
+
+	c := &chart.Chart{
+		Title:  opt.Title.Text,
+		Width:  opt.Width,
+		Height: opt.Height,
+		XAxis:  xAxis,
+		YAxis:  GetYAxis(opt.Theme),
+		Series: GetSeries(opt.Series, opt.Theme),
+	}
+	if legendSize != 0 {
+		c.Elements = []chart.Renderable{
+			chart.LegendThin(c, chart.Style{
+				FillColor: hiddenColor,
+				// FillColor:   drawing.ColorWhite,
+				// FontColor:   DefaultTextColor,
+				FontSize:    8.0,
+				StrokeColor: hiddenColor,
+				// StrokeWidth: DefaultAxisLineWidth,
+				// Padding: Box{
+				// 	Top:    2,
+				// 	Left:   7,
+				// 	Right:  7,
+				// 	Bottom: 5,
+				// },
+			}),
+		}
+	}
+	return c
+}
diff --git a/series.go b/series.go
new file mode 100644
index 0000000..c3c0385
--- /dev/null
+++ b/series.go
@@ -0,0 +1,64 @@
+// MIT License
+
+// Copyright (c) 2021 Tree Xie
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package charts
+
+import (
+	"github.com/wcharczuk/go-chart/v2"
+	"github.com/wcharczuk/go-chart/v2/drawing"
+)
+
+type Series struct {
+	Type    string
+	Name    string
+	Data    []float64
+	XValues []float64
+}
+
+const lineStrokeWidth = 2
+const dotWith = 2
+
+func getSeriesColor(theme string, index int) drawing.Color {
+	// TODO
+	if theme == ThemeDark {
+	}
+	return SeriesColorsLight[index%len(SeriesColorsLight)]
+}
+
+func GetSeries(series []Series, theme string) []chart.Series {
+	arr := make([]chart.Series, len(series))
+	for index, item := range series {
+		// TODO 判断类型
+		arr[index] = chart.ContinuousSeries{
+			Name:    item.Name,
+			XValues: item.XValues,
+			Style: chart.Style{
+				StrokeWidth: lineStrokeWidth,
+				StrokeColor: getSeriesColor(theme, index),
+				DotColor:    getSeriesColor(theme, index),
+				DotWidth:    dotWith,
+			},
+			YValues: item.Data,
+		}
+	}
+	return arr
+}
diff --git a/theme.go b/theme.go
new file mode 100644
index 0000000..4d86a64
--- /dev/null
+++ b/theme.go
@@ -0,0 +1,67 @@
+// MIT License
+
+// Copyright (c) 2021 Tree Xie
+
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+package charts
+
+import "github.com/wcharczuk/go-chart/v2/drawing"
+
+var hiddenColor = drawing.Color{R: 110, G: 112, B: 121, A: 0}
+
+var AxisColorLight = drawing.Color{
+	R: 110,
+	G: 112,
+	B: 121,
+	A: 255,
+}
+
+var SeriesColorsLight = []drawing.Color{
+	{
+		R: 84,
+		G: 112,
+		B: 198,
+		A: 255,
+	},
+	{
+		R: 145,
+		G: 204,
+		B: 117,
+		A: 255,
+	},
+	{
+		R: 250,
+		G: 200,
+		B: 88,
+		A: 255,
+	},
+	{
+		R: 238,
+		G: 102,
+		B: 102,
+		A: 255,
+	},
+	{
+		R: 115,
+		G: 192,
+		B: 222,
+		A: 255,
+	},
+}