diff --git a/docs/advance/ovn-eip-fip-snat.en.md b/docs/advance/ovn-eip-fip-snat.en.md
index 9155c11be..6e235dd29 100644
--- a/docs/advance/ovn-eip-fip-snat.en.md
+++ b/docs/advance/ovn-eip-fip-snat.en.md
@@ -256,7 +256,7 @@ spec:
   namespaces:
   - vpc1
   enableExternal: true  # vpc enableExternal will automatically create an lrp association to the public network specified above
-  addExternalSubnets: # configure addExternalSubnets to support connecting multiple additional public networks
+  extraExternalSubnets: # configure extraExternalSubnets to support connecting multiple additional public networks
   - extra
 ```
 
diff --git a/docs/advance/ovn-eip-fip-snat.md b/docs/advance/ovn-eip-fip-snat.md
index 436b4652a..a3d3f941b 100644
--- a/docs/advance/ovn-eip-fip-snat.md
+++ b/docs/advance/ovn-eip-fip-snat.md
@@ -254,7 +254,7 @@ spec:
   namespaces:
   - vpc1
   enableExternal: true  # 开启 enableExternal 后 vpc 会自动连接名为 external 的 ls
-  addExternalSubnets: # 配置 addExternalSubnets 支持连接多个额外的公网网络
+  extraExternalSubnets: # 配置 extraExternalSubnets 支持连接多个额外的公网网络
   - extra
 ```