The meniscus of the knee is a fibrocartilaginous tissue with a thick circumferential edge and a thin inner edge in the shape of a wedge, which is called a meniscus when viewed in plan; it fills the space between the femoral and tibial condyles and has the function of enhancing the stability of the knee joint. The structural and functional characteristics of the meniscus make it one of the most easily damaged tissues in the knee joint. Knee meniscal injury requires not only timely and professional treatment, but also scientific rehabilitation exercises for faster recovery. 1.Support + crutches for one month; 2.Bend the knee 90° at the end of the second week after surgery; 3.No deep squatting, running and sports activities for three months after surgery; 4.Resume normal activities for six months after surgery; 5.Resume non-confrontation sports activities and prohibit physical confrontation type activities at one year after surgery. Can jump rope, moderate gymnastics, badminton, ballroom dancing and other moderate activities; 6, two years after surgery, full recovery, no restrictions on sports activities or competitive competitions. For example, fitness, basketball, etc. Overall, it takes two years or more for the meniscus to completely regenerate into the patient’s own tissue, and excessive activity before that is inappropriate.