At present, many orthopedic patients do not know about rehabilitation after surgery, thinking that everything is fine after surgery, so they can just go home and recuperate, missing the best time for rehabilitation, resulting in joint stiffness. And when is the right time to do post-operative rehabilitation in orthopedics? In the past, due to the limitation of the level of rehabilitation technology, the lack of people’s understanding of rehabilitation, and the defects of orthopedic internal fixation technology, post-operative professional rehabilitation was rare and started late. With the continuous updating of rehabilitation equipment and theories, and the continuous improvement of orthopedic internal fixation technology, the latest rehabilitation concept now is to start rehabilitation as early as possible after surgery, even before surgery. Before the surgery, you can explain your condition to the patient for the surgery, so that the patient can understand the surgery and reduce the pressure of the surgery. At the same time, you can teach some exercise methods to be performed in the early postoperative period, so that you will not be unable to complete the instruction in the early postoperative period due to pain. The swelling and pain can be reduced in the early postoperative period, and the braking of the affected limb and the motor training of the adjacent joints can be maintained. Rehabilitation of the surgical site must be done carefully, with reference to the degree of injury, the degree of surgical stability, the degree of patient tolerance and the level of the rehabilitation physician, of which it is very important to have to refer to the surgeon’s opinion. Postoperative rehabilitation is also very extensive, such as restoration of joint mobility, muscle strength training, balance training, proprioceptive training, and so on. In short, postoperative rehabilitation is essential and the sooner the better, the better, and the best time is within 3 months after surgery. The best time is within 3 months after surgery. Missing this time will lead to slow recovery of the joint, and the patient will suffer a lot of pain, and the final rehabilitation result will not be satisfactory. Therefore, patients are advised to go to the rehabilitation department for professional orthopedic rehabilitation as early as possible.