Injuries to the meniscus that do not reach the articular surface generally refer to injuries of degree I or II. With appropriate brake rest and supportive symptomatic treatment, injuries of this degree may heal on their own in the “red zone area” where blood flow is abundant. However, some patients with injuries, without braking and resting, continue to move and bear weight, which will cause further aggravation of the injury, and even cause damage through the joint surface, reaching degree III injury, which is impossible to achieve a cure. If a patient has a degree I or II injury, the injury may be repaired with appropriate brake rest and supportive symptomatic treatment, and the repair may not have any sequelae or effects. Therefore, it is recommended that patients go to the hospital for a detailed examination and take appropriate treatment to cure the injury after a clear diagnosis. However, in some cases, if the patient does not pay attention to maintenance and treatment, the degree I and degree II injury can also aggravate to degree III injury, which cannot be cured by conservative treatment.