diff --git a/docs-2.0/3.ngql-guide/16.subgraph-and-path/1.get-subgraph.md b/docs-2.0/3.ngql-guide/16.subgraph-and-path/1.get-subgraph.md
index 4573529c85c..bc7ba12f392 100644
--- a/docs-2.0/3.ngql-guide/16.subgraph-and-path/1.get-subgraph.md
+++ b/docs-2.0/3.ngql-guide/16.subgraph-and-path/1.get-subgraph.md
@@ -35,6 +35,7 @@ While using the `WHERE` clause in a `GET SUBGRAPH` statement, note the following
 
 - **Only support** the `AND` operator.
 - **Only support** filter destination vertex, the vertex format must be `$$.tagName.propName`.
+- **Support** filter edge, the edge format must be `edge_type.propName`.
 - **Support** math functions, aggregate functions, string functions, datetime functions, type conversion functions and general functions in list functions.
 - **Not support** aggregate functions, schema-related functions, conditional expression, predicate functions, geography function and user-defined functions.