diff --git a/README.md b/README.md
index bebd499..765f696 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Video Classification with Pytorchvideo
+# Action Classification with Pytorchvideo
 
 *Author: [Jael Gu](https://github.com/jaelgu)*
 
@@ -6,7 +6,7 @@
 
 ## Description
 
-A video classification operator is able to predict labels (and corresponding scores)
+An action classification operator is able to predict labels of human activities (with corresponding scores)
 and extracts features given the input video.
 It preprocesses video frames with video transforms and then loads pre-trained models by model names.
 This operator has implemented pre-trained models from [Pytorchvideo](https://github.com/facebookresearch/pytorchvideo)
@@ -27,7 +27,7 @@ import towhee
 (
     towhee.glob('./archery.mp4')
           .video_decode.ffmpeg()
-          .video_classification.pytorchvideo(model_name='slowfast_r50')
+          .action_classification.pytorchvideo(model_name='slowfast_r50')
           .show()
 )
 ```
@@ -41,7 +41,7 @@ import towhee
 (
     towhee.glob['path']('./archery.mp4')
           .video_decode.ffmpeg['path', 'frames']()
-          .video_classification.pytorchvideo['frames', ('labels', 'scores', 'features')](
+          .action_classification.pytorchvideo['frames', ('labels', 'scores', 'features')](
                 model_name='slowfast_r50')
           .select['labels', 'scores', 'features']()
           .show(formatter={'path':'video_path'})
@@ -55,7 +55,7 @@ import towhee
 
 Create the operator via the following factory method
 
-***video_classification.pytorchvideo(
+***action_classification.pytorchvideo(
 model_name='x3d_xs', skip_preprocess=False, classmap=None, topk=5)***
 
 **Parameters:**