diff --git a/src/main/java/com/alibaba/ttl/TtlCallable.java b/src/main/java/com/alibaba/ttl/TtlCallable.java
index a9498d42c..4dd87235e 100644
--- a/src/main/java/com/alibaba/ttl/TtlCallable.java
+++ b/src/main/java/com/alibaba/ttl/TtlCallable.java
@@ -19,7 +19,7 @@
 import static com.alibaba.ttl.TransmittableThreadLocal.Transmitter.*;
 
 /**
- * {@link TtlCallable} decorate {@link Callable}, so as to get {@link TransmittableThreadLocal}
+ * {@link TtlCallable} decorate {@link Callable} to get {@link TransmittableThreadLocal} value
  * and transmit it to the time of {@link Callable} execution, needed when use {@link Callable} to thread pool.
  * <p>
  * Use factory method {@link #get(Callable)} to get decorated instance.
diff --git a/src/main/java/com/alibaba/ttl/TtlRunnable.java b/src/main/java/com/alibaba/ttl/TtlRunnable.java
index c1c1f3bc8..724268867 100644
--- a/src/main/java/com/alibaba/ttl/TtlRunnable.java
+++ b/src/main/java/com/alibaba/ttl/TtlRunnable.java
@@ -17,7 +17,7 @@
 import static com.alibaba.ttl.TransmittableThreadLocal.Transmitter.*;
 
 /**
- * {@link TtlRunnable} decorate {@link Runnable}, so as to get {@link TransmittableThreadLocal}
+ * {@link TtlRunnable} decorate {@link Runnable} to get {@link TransmittableThreadLocal} value
  * and transmit it to the time of {@link Runnable} execution, needed when use {@link Runnable} to thread pool.
  * <p>
  * Use factory methods {@link #get} / {@link #gets} to create instance.
diff --git a/src/main/java/com/alibaba/ttl/TtlTimerTask.java b/src/main/java/com/alibaba/ttl/TtlTimerTask.java
index 967c54038..ad183a970 100644
--- a/src/main/java/com/alibaba/ttl/TtlTimerTask.java
+++ b/src/main/java/com/alibaba/ttl/TtlTimerTask.java
@@ -12,7 +12,7 @@
 import static com.alibaba.ttl.TransmittableThreadLocal.Transmitter.*;
 
 /**
- * {@link TtlTimerTask} decorate {@link TimerTask}, so as to get {@link TransmittableThreadLocal}
+ * {@link TtlTimerTask} decorate {@link TimerTask} to get {@link TransmittableThreadLocal} value
  * and transmit it to the time of {@link TtlTimerTask} execution, needed when use {@link TtlTimerTask} to {@link java.util.TimerTask}.
  * <p>
  * Use factory method {@link #get(TimerTask)} to create instance.