diff --git a/docs/overview/spark_on_angel.md b/docs/overview/spark_on_angel.md
index 32feda426..fc3c82092 100644
--- a/docs/overview/spark_on_angel.md
+++ b/docs/overview/spark_on_angel.md
@@ -41,7 +41,7 @@ Angel从v1.0.0版本开始，就加入了**PS-Service**的特性，不仅仅可
 
 * **PSMatrix**
 	* 包括DensePSMatrix和SparsePSMatrix
-	* PSMatrix的创建和销毁：通过`PSMatrix.dense(rows: Int, cols: Int)`创建，当PSMatrix不再使用后，需要手动调用`destory`销毁该Matrix
+	* PSMatrix的创建和销毁：通过`PSMatrix.dense(rows: Int, cols: Int)`创建，当PSMatrix不再使用后，需要手动调用`destroy`销毁该Matrix
 
 使用Spark on Angel的简单代码如下：
 
diff --git a/docs/overview/spark_on_angel_en.md b/docs/overview/spark_on_angel_en.md
index 99f5b25e3..2261cd052 100644
--- a/docs/overview/spark_on_angel_en.md
+++ b/docs/overview/spark_on_angel_en.md
@@ -32,11 +32,14 @@ Spark-On-Angel is lightweight due to Angel's interface design. The core modules
 	* PSModelPool corresponds to a matrix on Angel PS, responsible for requesting, retrieving, and destructing PSVector 
 
 * **PSVector/PSVetorProxy**
-	* PSVectorRemotePSVector and BreezePSVector are encapsulated with PSVector's operations under different scenarios
+	* RemotePSVector and BreezePSVector are encapsulated with PSVector's operations under different scenarios
 		* `RemotePSVector` provides operations between PSVector and local value, including pull, push, increment
 		* `BreezePSVector` provides operations between PSVector and PSVector, including most algebraic operations
 	* PSVectorProxy is PSVector's proxy that points to a PSVector on Angel PS
-
+	
+* **PSMatrix**
+	* Including DensePSMatrix and SparsePSMatrix
+	* Construction and destruction of PSMatrix: Use ```PSMatrix.dense(rows: Int, cols: Int)``` to construct a PSMatrix. When the Matrix is not needed, call ```destroy``` to destruct it manually
 
 
 ## 3. Execution Process