diff --git a/docs/cn/Application-toolkit-trace-CN.md b/docs/cn/Application-toolkit-trace-CN.md
index 84695938bf5666513aebc036188a23e879ee86f1..c0f58c73f8acd1c213dfeb90e2e8547b1f0f3976 100644
--- a/docs/cn/Application-toolkit-trace-CN.md
+++ b/docs/cn/Application-toolkit-trace-CN.md
@@ -17,3 +17,7 @@ modelAndView.addObject("traceId", TraceContext.traceId());
_示例代码,仅供参考_
* 对任何需要追踪的方法,使用 `@Trace` 标注,则此方法会被加入到追踪链中。
+* 在被追踪的方法中自定义 tag.
+```java
+ActiveSpan.tag("my_tag", "my_value");
+```
diff --git a/docs/en/Application-toolkit-logback-1.x.md b/docs/en/Application-toolkit-logback-1.x.md
index 82228e74daeede7711a30a8daec16dd9a971c2e8..86611b45264497efcf8955857a6ad74dbcbcf643 100644
--- a/docs/en/Application-toolkit-logback-1.x.md
+++ b/docs/en/Application-toolkit-logback-1.x.md
@@ -1,10 +1,10 @@
* Dependency the toolkit, such as using maven or gradle
```xml
-
- org.apache.skywalking
- skywalking-toolkit-logback-1.x
- {project.release.version}
-
+
+ org.apache.skywalking
+ apm-toolkit-logback-1.x
+ {project.release.version}
+
```
* set `%tid` in `Pattern` section of logback.xml
diff --git a/docs/en/Application-toolkit-trace.md b/docs/en/Application-toolkit-trace.md
index 4f195de41cad62c8979665fbec6e9cb660063c02..bbd8df6de3680b2a0b27b856c080da6bad8d8e04 100644
--- a/docs/en/Application-toolkit-trace.md
+++ b/docs/en/Application-toolkit-trace.md
@@ -17,3 +17,7 @@ modelAndView.addObject("traceId", TraceContext.traceId());
_Sample codes only_
* Add `@Trace` to any method you want to trace. After that, you can see the span in the Stack.
+* Add custom tag in the context of traced method .
+```java
+ActiveSpan.tag("my_tag", "my_value");
+```