Meniscal injuries are one of the most common types of knee sports injuries. There are many types of simple meniscal injuries, including transverse tears, longitudinal tears, horizontal tears, barrel stem tears and compound tears, etc. Because of the special anatomy of the meniscus, its blood supply mainly comes from the periphery of the meniscus. Arthroscopic meniscus surgery includes resection, shaping or partial resection, suturing and allograft meniscus transplantation, etc. The best post-operative results are achieved by suturing and transplantation.