diff --git a/Live/src/main/java/com/frank/live/camera2/Camera2Helper.java b/Live/src/main/java/com/frank/live/camera2/Camera2Helper.java
index 2281f7d..d2059cd 100644
--- a/Live/src/main/java/com/frank/live/camera2/Camera2Helper.java
+++ b/Live/src/main/java/com/frank/live/camera2/Camera2Helper.java
@@ -37,7 +37,7 @@ import java.util.concurrent.locks.ReentrantLock;
 import androidx.annotation.NonNull;
 
 /**
- * Camera2操作
+ * Camera2: open, preview and close
  * Created by frank on 2019/12/18.
  */
 @TargetApi(21)