Dislocated arms in children are usually not allowed to stay overnight and need to be treated promptly to avoid aggravation due to untimely treatment. The golden period of manual repositioning after arm dislocation is about 6 hours, if more than 6 hours, the tissues around the dislocation may produce significant edema, making the manual repositioning more difficult and even leading to failure of the manual repositioning. After two failed manipulative repositioning attempts, it is usually not possible to perform further manipulative repositioning treatment, and surgical incision and repositioning is required to restore the anatomical structure of the joint, but the damage is greater. Therefore, after a child’s arm is dislocated, parents should not pull the child’s arm excessively. They can first fix the arm with a towel or triangular towel and promptly send the child to the orthopedic department of the hospital or to the emergency room for consultation, and overnight is not recommended. After professional treatment, parents should strictly watch their children and avoid movement of the affected limb. If there is loosening of the fixed part or abnormal sensation of the limb, they should follow up with the hospital in time to avoid re-injury.