diff --git a/paddle/fluid/lite/api/android/jni/src/com/baidu/paddle/lite/PaddlePredictor.java b/paddle/fluid/lite/api/android/jni/src/com/baidu/paddle/lite/PaddlePredictor.java
index f8957f948040ba4e59397098989fe55e17e60236..69cb2942317db7a81ef94ff4c753fa006aff7178 100644
--- a/paddle/fluid/lite/api/android/jni/src/com/baidu/paddle/lite/PaddlePredictor.java
+++ b/paddle/fluid/lite/api/android/jni/src/com/baidu/paddle/lite/PaddlePredictor.java
@@ -33,7 +33,7 @@ public class PaddlePredictor {
      * 
      * @param modelPath      modelPath model file path
      * @param preferredPlace preferred place to run Cxx Model
-     * @param validPlaces    n * 4 int array, valid places to run Cxx Model
+     * @param validPlaces    valid places to run Cxx Model
      * @return true if load successfully
      */
     public static native boolean loadCxxModel(String modelPath, Place preferredPlace, Place[] validPlaces);