Meniscus injury can recover by itself. Meniscus injury is usually divided into degree I, degree II and degree III, of which degree I and degree II are related to degenerative meniscus lesions. Degenerative lesions refer to meniscus aging. Usually, meniscus injuries of degree I and II can be recovered by giving certain cold compresses and oral analgesic drugs in the acute stage, while baking electricity after 48h of compresses to promote absorption. The prerequisite for recovery is that the meniscus is less demanding for ordinary people, but for professional athletes, the functional requirements are greater. For high jump, competition short events, 100m, 200m, 400m runners, the meniscus recovers on its own and cannot reach the functional requirements. Meniscus Ⅲ degree of injury, especially the tear is larger and protrudes out to require surgical intervention. Grade III injuries do not affect daily life, are not painful, have no symptoms, and can be maintained as is and treated in accordance with clinical recovery, or without surgical intervention.