If the patient has a first-degree meniscus injury, which means that there is no obvious meniscus tear or fracture, the patient can be treated by braking the knee for three weeks and applying blood-boosting drugs and cartilage nutrition drugs. If the patient has a second-degree meniscal injury, that is, the meniscus is torn or fractured, but it does not reach the periphery of the meniscus, but is only partially torn and fractured, in this case, the knee joint can be braked for four weeks and treated with blood-stasis and cartilage nutrient drugs, and after four weeks, the immobilization can be removed and the patient can move to the ground. If there is no significant pain in the knee joint, no locking of the lower leg and no popping of the knee joint, the meniscus has recovered. If the patient has significant knee swelling, pain, strangulation during activity, and internal popping of the knee, the second degree meniscus injury has not fully recovered with conservative treatment and requires minimally invasive knee arthroscopic meniscus repair surgery. If the patient has a third-degree meniscus injury, that is, a significant tear or fracture, then minimally invasive arthroscopic meniscus repair surgery is indicated.