diff --git a/docs-2.0/1.introduction/3.vid.md b/docs-2.0/1.introduction/3.vid.md
index 2c44a7dc076..56ff991f6bd 100644
--- a/docs-2.0/1.introduction/3.vid.md
+++ b/docs-2.0/1.introduction/3.vid.md
@@ -1,6 +1,6 @@
 # VID
 
-In NebulaGraph, a vertex is uniquely identified by its ID, which is called a VID or a Vertex ID.
+In a graph space, a vertex is uniquely identified by its ID, which is called a VID or a Vertex ID.
 
 ## Features