You can exercise after a mild meniscus tear has healed, but try to avoid strenuous exercise. Meniscus is a fibrocartilage structure in the knee joint, which can play the role of cushioning and protection of the knee joint, and after the damage, there may be joint pain, swelling and other manifestations. Usually the meniscus acute injury should be promptly iced, after standardized treatment healed, appropriate quadriceps training also helps to increase the stability of the knee joint, but to avoid overloading the meniscus to prevent re-tear. Meniscus mild tear should be actively treated, the exercise process to avoid excessive load on the meniscus, usually pay attention to develop good habits, and actively cooperate with the doctor for rehabilitation training.