Meniscus tear is a common knee injury, while arthroscopic surgery as an important treatment technique mainly divided intomeniscectomy and meniscus repair. Nowadays, with the rapid development of knee arthroscopic technology, as well as deepen understand-ing meniscus anatomy and biomechanics, the concept of clinical diagnosis and treatment has undergone great changes. In this paper, the an-atomical structure of meniscus, diagnosis of meniscus injury, common surgical methods of meniscus repair under arthroscopy at present,and repair of different types of meniscus tears are reviewed, aiming to improve clinicians' understanding of the treatment of meniscus injuryand select the best treatment means.