diff --git a/site/src/site/sphinx/en/vmtool.md b/site/src/site/sphinx/en/vmtool.md
index 2e6cb5a3d..b30dde9db 100644
--- a/site/src/site/sphinx/en/vmtool.md
+++ b/site/src/site/sphinx/en/vmtool.md
@@ -11,7 +11,19 @@ vmtool
 ### getInstances
 
 ```bash
-vmtool --action getInstances --className java.lang.String --limit 10
+$ vmtool --action getInstances --className java.lang.String --limit 10
+@String[][
+    @String[com/taobao/arthas/core/shell/session/Session],
+    @String[com.taobao.arthas.core.shell.session.Session],
+    @String[com/taobao/arthas/core/shell/session/Session],
+    @String[com/taobao/arthas/core/shell/session/Session],
+    @String[com/taobao/arthas/core/shell/session/Session.class],
+    @String[com/taobao/arthas/core/shell/session/Session.class],
+    @String[com/taobao/arthas/core/shell/session/Session.class],
+    @String[com/],
+    @String[java/util/concurrent/ConcurrentHashMap$ValueIterator],
+    @String[java/util/concurrent/locks/LockSupport],
+]
 ```
 
 > Through the `--limit` parameter, you can limit the number of return values to avoid pressure on the JVM when obtaining large data. The default value of limit is 10.
diff --git a/site/src/site/sphinx/vmtool.md b/site/src/site/sphinx/vmtool.md
index 83bb991ca..59ab1f514 100644
--- a/site/src/site/sphinx/vmtool.md
+++ b/site/src/site/sphinx/vmtool.md
@@ -12,7 +12,19 @@ vmtool
 ### 获取对象
 
 ```bash
-vmtool --action getInstances --className java.lang.String --limit 10
+$ vmtool --action getInstances --className java.lang.String --limit 10
+@String[][
+    @String[com/taobao/arthas/core/shell/session/Session],
+    @String[com.taobao.arthas.core.shell.session.Session],
+    @String[com/taobao/arthas/core/shell/session/Session],
+    @String[com/taobao/arthas/core/shell/session/Session],
+    @String[com/taobao/arthas/core/shell/session/Session.class],
+    @String[com/taobao/arthas/core/shell/session/Session.class],
+    @String[com/taobao/arthas/core/shell/session/Session.class],
+    @String[com/],
+    @String[java/util/concurrent/ConcurrentHashMap$ValueIterator],
+    @String[java/util/concurrent/locks/LockSupport],
+]
 ```
 
 > 通过 `--limit`参数，可以限制返回值数量，避免获取超大数据时对JVM造成压力。默认值是10。