Usually, meniscus injuries can be treated conservatively, such as plaster fixation, brake rest, functional exercise, etc. If meniscus rupture, arthroscopic surgery is recommended. 1. Conservative treatment: Acute meniscus injuries are usually treated conservatively, because some meniscus edge tear, or tear to the edge of the meniscus, often can heal naturally. For meniscus edge tear, should brake rest, application of long leg cast or knee immobilizer fixed knee extension position 4~6 weeks. During the period of immobilization, the quadriceps muscle should be exercised, which can help the recovery and promote the absorption of joint effusion. 2. Surgical treatment: generally applicable to those who have been ineffective in non-surgical treatment, interlocking status or frequent interlocking, repeated weak leg, recurrent effusion, severe pain and clear diagnosis. Surgery includes total meniscectomy, partial meniscectomy and meniscus repair. It is recommended to choose the appropriate treatment for knee meniscus injury under the guidance of a specialist.