diff --git a/demos/speech_recognition/README.md b/demos/speech_recognition/README.md
index 9fc7f088f..88327c3e6 100644
--- a/demos/speech_recognition/README.md
+++ b/demos/speech_recognition/README.md
@@ -26,6 +26,8 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav https://paddlespee
   ```bash
   paddlespeech asr --input ./zh.wav
   ```
+  (It doesn't matter if package `paddlespeech-ctcdecoders` is not found, this package is optional.)
+  
   Usage:
   ```bash
   paddlespeech asr --help
diff --git a/demos/speech_recognition/README_cn.md b/demos/speech_recognition/README_cn.md
index 421a3ddaf..fe289b92c 100644
--- a/demos/speech_recognition/README_cn.md
+++ b/demos/speech_recognition/README_cn.md
@@ -22,6 +22,8 @@ wget -c https://paddlespeech.bj.bcebos.com/PaddleAudio/zh.wav https://paddlespee
   ```bash
   paddlespeech asr --input ./zh.wav
   ```
+  (如果显示`paddlespeech-ctcdecoders`这个python包没有找到的Error，没有关系，这个包是非必须的。)
+  
   使用方法：
   ```bash
   paddlespeech asr --help