diff --git a/docs/en/FAQ/Memory-leak-enhance-Worker-thread.md b/docs/en/FAQ/Memory-leak-enhance-Worker-thread.md
new file mode 100644
index 000000000..fd5d3884b
--- /dev/null
+++ b/docs/en/FAQ/Memory-leak-enhance-Worker-thread.md
@@ -0,0 +1,32 @@
+### Problem 
+When using a thread pool, `TraceSegment` data in a thread cannot be reported and there are memory data that cannot be recycled (memory leaks)
+
+### Example
+``` java
+    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
+    executor.setThreadFactory(r -> new Thread(RunnableWrapper.of(r)));
+```
+
+### Reason
+
+* Worker threads are enhanced, when using thread pool. 
+* According to the SkyWalking Java Agent design, when you want to trace cross thread, you need to enhance the task thread.
+
+### Resolve
+
+* When using `Thread Schedule Framework`
+Checked SkyWalking Thread Schedule Framework at [SkyWalking Java agent supported list](../setup/service-agent/java-agent/Supported-list.md), such as Spring FrameWork @Async, which can implement tracing without any modification. 
+
+* When using `Custom Thread Pool`
+Enhance the task thread with the following usage.
+
+```java
+    ExecutorService executorService = Executors.newFixedThreadPool(1);
+    executorService.execute(RunnableWrapper.of(new Runnable() {
+        @Override public void run() {
+            //your code
+        }
+    }));
+```
+See [across thread solution APIs](../setup/service-agent/java-agent/Application-toolkit-trace-cross-thread.md) for more usage
+
diff --git a/docs/en/FAQ/README.md b/docs/en/FAQ/README.md
index 5a6b78f44..0413ee131 100644
--- a/docs/en/FAQ/README.md
+++ b/docs/en/FAQ/README.md
@@ -24,4 +24,5 @@ These are known and common FAQs. We welcome you to contribute yours.
 * [No data shown and backend replies with "Variable 'serviceId' has coerced Null value for NonNull type 'ID!'"](time-and-timezone.md)
 * [**Unexpected endpoint register** warning after 6.6.0](Unexpected-endpoint-register.md)
 * [Use the profile exporter tool if the profile analysis is not right](../guides/backend-profile-export.md)
-* [Compatible with other javaagent bytecode processing](Compatible-with-other-javaagent-bytecode-processing.md)
\ No newline at end of file
+* [Compatible with other javaagent bytecode processing](Compatible-with-other-javaagent-bytecode-processing.md)
+* [**Java agent memory leak** when enhance `Worker thread` at use Thread Pool](Memory-leak-enhance-Worker-thread.md)