How long elbow exercise without rebound and stiffness is related to the patient’s own physical condition, severity of injury, and quality of exercise, and cannot be generalized. Since the elbow joint is closely connected with the joint capsule and ligament muscles, the elbow is especially prone to contracture and stiffness. If the patient has a scarred body, complications such as joint stiffness are more likely to occur, so it is recommended to start exercising as soon as possible under the guidance of a doctor. In order to prevent stiffness or rebound from occurring after elbow surgery, exercise should be started early in the postoperative period, starting with passive movement of the elbow joint within the pain-free range, and gradually restoring the mobility of elbow flexion and extension, and forearm rotation. In addition, it is important to exercise scientifically under the guidance of a professional therapist in a gradual and orderly manner, and to continue to exercise until a good result is achieved in order to get a better training effect. Any rebound and stiffness in the elbow joint after exercise should seek the advice of a professional doctor or therapist in time, and should not be exercised violently, so as not to cause secondary injury and prolong the course of the disease.