diff --git a/CustomView/Advance/[10]Matrix_Method.md b/CustomView/Advance/[10]Matrix_Method.md
index bc5094c..3fcc2ae 100644
--- a/CustomView/Advance/[10]Matrix_Method.md
+++ b/CustomView/Advance/[10]Matrix_Method.md
@@ -220,13 +220,37 @@ pointCount | 计算的点个数
 
 示例:
 
-``` java
+>
+将第二、三个点计算后存储进dst最开始位置。
 
+``` java
+	// 初始数据为三个点 (0, 0) (80, 100) (400, 300)
+	float[] src = new float[]{0, 0, 80, 100, 400, 300};
+	float[] dst = new float[6];
+	
+	// 构造一个matrix，x坐标缩放0.5
+	Matrix matrix = new Matrix();
+	matrix.setScale(0.5f, 1f);
+	
+	// 输出计算之前数据
+	Log.i(TAG, "before: src="+ Arrays.toString(src));
+	Log.i(TAG, "before: dst="+ Arrays.toString(dst));
+	
+	// 调用map方法计算
+	matrix.mapPoints(dst, 0, src, 2, 2);
+	
+	// 输出计算之后数据
+	Log.i(TAG, "after : src="+ Arrays.toString(src));
+	Log.i(TAG, "after : dst="+ Arrays.toString(dst));
 ```
 
 结果:
 
 ```
+before: src=[0.0, 0.0, 80.0, 100.0, 400.0, 300.0]
+before: dst=[0.0, 0.0, 0.0, 0.0, 0.0, 0.0]
+after : src=[0.0, 0.0, 80.0, 100.0, 400.0, 300.0]
+after : dst=[40.0, 100.0, 200.0, 300.0, 0.0, 0.0]
 
 ```