Whether the meniscus injury can heal on its own, first of all, we need to know the degree of meniscus injury according to MRI, minor meniscus injury can heal on its own, while serious meniscus injury needs corresponding intervention treatment. If the injury is not serious, the knee pain is mild, the swelling is not obvious, and the function of the knee joint is not affected, it can be recovered after a period of recuperation. However, if you find that the knee pain is serious, the swelling of the injured position is very strong, and you are not able to carry out daily activities, this phenomenon may be a meniscus tear, which belongs to the serious meniscus injury, usually cannot be healed on its own, and you need to go to the hospital in time for knee arthroscopy surgery treatment. During the recovery period of meniscus injury, you should eat more protein-rich food, such as soybeans, pork, etc., as well as fruits rich in vitamin C, in order to promote meniscus repair.