Clinical indications for meniscus injury surgery are usually third-degree injuries. Meniscus injuries are categorized as first, second, or third degree according to the degree of injury. First and second degree injuries are mainly degenerative and can be treated conservatively to relieve symptoms. Third-degree injury indicates that the meniscus has been completely torn, if the injury site is in the white zone or red-white zone, it is difficult to heal, usually conservative treatment can not alleviate the pain, if the symptoms of joint interlocking, joint activity popping, joint activity restriction, etc. need to consider arthroscopic meniscal resection or repair, and in severe cases, need to be allogeneic meniscus transplantation surgery. In addition, if the meniscus injury is combined with intra-articular fractures and ligament injuries, surgical treatment is also required. Therefore, the specific indications for surgery need to be judged by a specialist based on clinical manifestations.