Meniscus suture 3 weeks recovery is not true, general postoperative immobilization 4 to 6 weeks, 8 to 10 weeks after full weight bearing. Meniscus is a crescent-shaped fibrocartilage structure in the knee joint, divided into white zone, red-white zone and red zone from the inside out, the white zone has no blood flow, can not be repaired after the injury, the general line meniscectomy. The red-white zone and red zone have blood transportation, and suture repair is usually chosen after injury. After meniscectomy suture, long leg cast or isometric knee brace is usually used for braking, and the immobilization time is usually 4-6 weeks, during which, isometric exercises of quadriceps, hamstrings, gastrocnemius, flounder muscles and hip extensors, flexors, retractors and spreaders are carried out to maintain the muscle tone. After removing the external fixation, strengthen the joint function exercise, gradually increase the weight bearing, and fully weight bearing after 8 to 10 weeks. After meniscus suture surgery need to exercise under the guidance of the physician, it is strictly prohibited to increase weight bearing to avoid meniscus re-injury.