diff --git a/docs/process/fiber.md b/docs/process/fiber.md
index 1cd3c1e..64506d8 100644
--- a/docs/process/fiber.md
+++ b/docs/process/fiber.md
@@ -116,7 +116,7 @@ this.key = key;
 this.elementType = null;
 // 对于 FunctionComponent，指函数本身，对于ClassComponent，指class，对于HostComponent，指DOM节点tagName
 this.type = null;
-// Fiber对应的真实DOM节点
+// Fiber对应的的真实DOM节点或Class Component实例
 this.stateNode = null;
 ```