Rehabilitation exercise program: ① Conservative treatment, that is, the rehabilitation exercise program for children with small splint cast fixed by manipulation: early (1~2 weeks), the fracture site pain and swelling of the elbow is very high during this period, the fracture end is still unstable, it is not easy to carry out functional activities of the elbow joint, and the main form of rehabilitation exercise is to carry out finger extension and flexion and muscle stretching exercises, from the beginning 3~5 times a day, 5~10 minutes each time, gradually increase the activity The main form of rehabilitation exercise is to perform finger extension and flexion and muscle stretching exercises. In the middle stage (2~4 weeks), the local pain is obviously reduced or disappeared, the swelling of the elbow gradually decreases, the fracture end is initially stabilized, and the range and amount of activities can be increased on the basis of the original activities, and the extension and flexion of the wrist joint can be practiced. In the late stage (4~8 weeks), the fracture site has obvious scab growth and the fracture is relatively firm, the functional exercise is mainly for elbow extension and flexion activities to restore the function of the elbow joint, the specific method is to sit the child in front of the table, square the upper arm on a thin cushion on the table, the nurse or the parent presses the child’s forearm with the hand to prevent the forearm from leaving the table, the patient’s palm is up, the healthy hand can hold the affected hand and apply light force to assist. The patient can hold the patient’s forearm with his or her heart upward and apply light force to the patient’s hand, with the assisted force not causing pain, and actively practice elbow extension and flexion 4 to 6 times a day for 10 to 15 minutes each time, gradually increasing the number and duration of exercises as time goes on. At the same time, the exercises are combined with our homemade Chinese herbal fumigation, which is performed twice a day for 20 minutes each time. ②Surgical treatment is the rehabilitation exercise procedure for children with steel pin wire fixation for incisional repositioning. The surgical repositioning is mainly for children who failed to reposition manually or combined with vascular nerve injury, and all the surgical cases in this group used crossed steel pin tension band for internal fixation after repositioning. The extension and flexion activities of the fingers and wrist joints were mainly performed within 1 week after surgery to promote blood circulation and facilitate the reduction of swelling. Due to the strong internal fixation, the fracture site is relatively stable and the external fixation time is usually 7-10 days. Therefore, the external fixation is removed after 1 week postoperatively, and the functional rehabilitation exercises of the elbow joint are started. The exercises are the same as the late stage of the manipulative repositioning, and Chinese herbal fumigation is also used after the stitches are removed.