Anterior cruciate ligament reconstruction surgery of the knee has been fully carried out nationwide, but we often see unsatisfactory post-operative rehabilitation results at present, which is greatly related to the technical level of the surgeon, post-operative rehabilitation methods, and the patient’s medical compliance. After these years of follow-up for patients after ACL surgery, we have summarized a set of our own methods. Within 3 days after surgery, because the inflammation is more obvious, static activity can be the main, 1 week in bed bending movement gradually reach 90 degrees, some people can reduce the 10 degrees required, and then every 1 week to increase 10 degrees of activity, so that in 6 weeks after surgery has reached the normal bending angle; postoperative weight bearing depends on the meniscus suture, such as suture meniscus, it is not weight bearing 6 weeks, 6 weeks after the gradual weight bearing; meniscus removed or trimmed is In the case of meniscectomy or revision, partial weight-bearing will be applied after the surgery and full weight-bearing will be applied by 6 weeks. In the case of autologous tendon grafting, a brace will be worn for 3 months after surgery for protection, and jogging training will be performed after the removal of the brace, and vigorous exercise will be allowed after 1 year; in the case of allogeneic tendon grafting, a brace will be worn for 4.5 months after surgery for protection, and jogging training will be performed after the removal of the brace, and vigorous exercise will be allowed after 1.5 years. Throughout the rehabilitation process is the muscle strength training, it is necessary to exercise the muscle strength to protect the knee joint and to improve the strength and mobility at the same time, which are closely related to each other and cannot be done without each other. Especially in patients with adhesions, without good muscle strength, it is impossible to maintain mobility and further rehabilitation. However, there will be poor bone tract position in our surgery and we cannot really achieve good isometricity, although what we need is a joint that is both stable and flexible, so at this time we just need to give up part of the stability and require good joint mobility, and as for how the ligament function after reconstruction, we will evaluate it after the joint moves freely, and if there is still instability, we can consider revision; and if the patient has poor medical compliance, we can only If the patient is not medically compliant, the pros and cons will be clearly communicated to the patient and will be evaluated.