Image and video lossy compression algorithms ease the storage and transmission of information under limited bandwidth. However, lossy compression modes inevitably cause a decrease in signal fidelity and poor subjective experience. How to remove Compression artifactscompression artifacts in a post-processing manner at the decoding end has become one of the trends in point cloud enhancement tasks. Recently, numerous of compression artifact removal methods with deep learning have shown excellent performance and generalization. On the one hand, these methods have widely migrated general Quality enhancementquality enhancement methods from images to videos. On the other hand, with the continuous development of the characteristics of compression distortion and feature extraction paradigms, deep learning-based compression artifact removal methods will show better performance in the future.