The meniscus is a fibrous cartilage tissue, which has no nerves or blood vessels, and the arthroscopic surgery is minimally invasive and causes little trauma to the tissue. Therefore, functional exercises should be started early in order to restore function as soon as possible. The physiological role of the meniscus is to reduce friction and shock absorption on the contralateral joint surface, so the muscle strength should be strengthened after resection to enhance the stability of the joint during movement and protect the articular cartilage. If there is a combination of severe cartilage injury or meniscal suture repair, you should consult with your surgeon and rehabilitation doctor when using this program and perform exercises according to the situation. 1.The methods and data provided in this program are based on the general routine, and the specific implementation should be done under the guidance of the doctor depending on your condition and surgery. 2. A certain degree of pain may exist in the early stage of functional exercises, which is unavoidable. If the pain can subside to the original level within half an hour after the exercise is stopped, it will not cause damage to the tissue and should be tolerated. 3, muscle strength exercises should be concentrated until the muscles are sore and fatigued, and then proceed to the next group after sufficient rest. The number of exercises, time, load depending on their own situation, and should be practiced at the same time the healthy side. The improvement of muscle strength is a key factor for joint stability, and must be practiced carefully. 4, in addition to the surgical limb brake protection, the rest of the body parts (such as the upper limb, waist and abdomen, the healthy side of the leg, etc.) should be practiced as much as possible to ensure physical quality, improve the overall level of circulation and metabolism, and promote the recovery of the surgical local. 5 .Joint mobility (flexion and extension) exercises should be performed only 2-3 times a day, and it is enough to strive for improvement of the angle. In the early stage, repeated flexion and extension should be avoided and practiced several times to avoid swelling. If the flexion angle does not progress for a long time (>2 weeks), there may be joint adhesions, so great attention should be paid. 6.If the joint is swollen and painful after the exercise, ice should be applied for 15-20 minutes immediately. If you usually feel swelling, pain and fever in the joint, you can apply ice again, 2-3 times a day. 7.You should not walk too much in the early postoperative period, otherwise it may cause swelling and affect the functional rehabilitation process. 8.The side with shadow in the appendix is the affected side. 9, athletes with better muscle strength should speed up the progress and increase the load as appropriate. 10, the swelling of the joint will accompany the entire exercise process, swelling does not increase with the angle of the exercise and the amount of activity that is normal, until the angle and muscle strength is basically back to normal swelling will gradually subside. Sudden increase of swelling should adjust the exercises and reduce the amount of activity, and in case of seriousness, timely follow-up should be made.