Disc meniscus is a developmental deformity, disc meniscus does not all need surgery, as follows: 1. No surgery is needed: for some disc meniscus that is unintentionally found during physical examination, if the patient has no symptoms, no treatment can be done, avoid strenuous exercise as much as possible, avoid deep squatting, stair climbing, mountain climbing and other activities that may damage the meniscus can be. The main problem of discoid meniscus compared to normal meniscus is that the meniscus is thicker and its fiber composition is not normal, therefore, it is easy to rupture under more strenuous exercise, and once the meniscus ruptures, it is easy to form intra-articular symptoms. Therefore, for patients without meniscus rupture do not need surgery, only regular follow-up and observation. 2, need surgery: for the ruptured disc meniscus, patients have obvious symptoms, such as stuck pressure, pain, playing soft legs, etc., it is best to perform surgery in time to avoid damage to the articular cartilage caused by the meniscus.