diff --git a/docs/en/concepts-and-designs/overview.md b/docs/en/concepts-and-designs/overview.md
index 34fdae077..b5bff934b 100644
--- a/docs/en/concepts-and-designs/overview.md
+++ b/docs/en/concepts-and-designs/overview.md
@@ -27,9 +27,9 @@ In addition to all these, you can have distributed tracing from SkyWalking nativ
 and OpenCensus.
 
 ## Architecture
-The SkyWalking is logically splittd into four parts: Probes, Platform backend, Storage and UI.
+The SkyWalking is logically split into four parts: Probes, Platform backend, Storage and UI.
 
-<img src="https://skywalkingtest.github.io/page-resources/6_overview.png"/>
+<img src="http://skywalking.apache.org/assets/frame.jpeg"/>
 
 - The **Probe**s are different based on different sources. They collect data and reformat them in SkyWalking requirements.
 - The **Platform backend** is a backend, supported cluster for sure. It is for aggregation, analysis and driving process flow
diff --git a/docs/others/cn/concepts-and-designs/overview-cn.md b/docs/others/cn/concepts-and-designs/overview-cn.md
index ab85ca44c..339716543 100644
--- a/docs/others/cn/concepts-and-designs/overview-cn.md
+++ b/docs/others/cn/concepts-and-designs/overview-cn.md
@@ -18,7 +18,7 @@
 
    SkyWalking在逻辑上分为四个部分：探针，平台后端，存储和UI。
    
-   <img src="https://skywalkingtest.github.io/page-resources/6_overview.png"/>
+   <img src="http://skywalking.apache.org/assets/frame.jpeg"/>
 
 - **探针**  基于不同的来源是不同的。它们收集数据并根据SkyWalking需求重新格式化。
 - **平台后端**  是一个后端服务，支持集群部署。它用于聚合，分析和驱动从探针到UI的流程。它还提供可插拔能力为不同的数据源（如Zipkin）、存储器实现和集群管理。您甚至可以使用[观察分析语言](oal-cn.md)自定义聚合和分析。
diff --git a/docs/others/cn/guides/Java-Plugin-Development-Guide.md b/docs/others/cn/guides/Java-Plugin-Development-Guide.md
index 7eb5699d5..6ab318e0b 100644
--- a/docs/others/cn/guides/Java-Plugin-Development-Guide.md
+++ b/docs/others/cn/guides/Java-Plugin-Development-Guide.md
@@ -293,7 +293,7 @@ public interface InstanceMethodsAroundInterceptor {
 1. 开发并测试。
 1. 发送拉取请求并要求审核。
 1. 提供自动测试用例。 
-所有测试用例都托管在[SkywalkingTest/skywalking-agent-testcases repository](https://github.com/SkywalkingTest/skywalking-agent-testcases).
-关于如何编写测试用例，请按照[如何编写](https://github.com/SkywalkingTest/skywalking-agent-testcases/blob/master/docs/how-to-write-a-plugin-testcase.md) 文档来实现.
+所有测试用例都托管在[SkyAPMTest/agent-auto-integration-testcases repository](https://github.com/SkyAPMTest/agent-auto-integration-testcases).
+关于如何编写测试用例，请按照[如何编写](https://github.com/SkyAPMTest/agent-auto-integration-testcases/blob/master/docs/how-to-write-a-plugin-testcase.md) 文档来实现.
 1. 在提供自动测试用例并在CI中递交测试后，插件提交者会批准您的插件。
 1. SkyWalking接受的插件。