Knee surgery recovery time will be significantly different, the short is 1-2 months, the long is 3-6 months, need to be combined with the patient’s specific diseases, including knee synovitis, knee fracture, osteoarthritis of the knee, etc., the details are as follows: first, knee synovitis: arthroscopic surgical treatment, it usually takes 1-2 months to recover, so that the patient can get satisfied with the recovery; second, knee fracture: Usually cut and repositioned internal fixation is used, and it usually takes 2-3 months for the fracture to heal successfully and the patient can recover gradually; Third, osteoarthritis of the knee: artificial joint replacement surgery is performed, and it usually takes 3-6 months for the patient to recover before the condition can be fully recovered. Therefore, the recovery time for knee surgery will be significantly different depending on the type of surgery and the condition of the patient, and active rehabilitation training will significantly shorten the recovery time.