diff --git a/docs/zh/design/apollo-design.md b/docs/zh/design/apollo-design.md
index e2724800c5f..9c53f52ab00 100644
--- a/docs/zh/design/apollo-design.md
+++ b/docs/zh/design/apollo-design.md
@@ -78,8 +78,8 @@ sequenceDiagram
 	Meta Server -->> Portal: Admin Service's instances(Multiple IP+Port)
 	loop until success
 		Portal ->> Portal: load balance choose a Admin Service instance
-		Portal ->> Config Service: request
-		Config Service -->> Portal: ack
+		Portal ->> Admin Service: request
+		Admin Service -->> Portal: ack
 	end
 ```
 
@@ -383,4 +383,4 @@ Apollo也提供了Tracer相关的SPI，可以方便地对接自己公司的监
 
 ## 5.2 Metrics
 
-从1.5.0版本开始，Apollo服务端支持通过`/prometheus`暴露prometheus格式的metrics，如`http://${someIp:somePort}/prometheus`
\ No newline at end of file
+从1.5.0版本开始，Apollo服务端支持通过`/prometheus`暴露prometheus格式的metrics，如`http://${someIp:somePort}/prometheus`