Removal of pins after arm fracture in children is related to the healing condition of the child and the individual’s physical condition, under normal circumstances, it takes about 3 months to remove the pins. Clinically, pin fixation is a common fixation method in children’s fracture surgery, but only pin fixation is not strong, but also need to be combined with external plaster and support and other joint fixation, usually after the fracture healing can be removed from the external fixation. However, the removal of the pins depends on the recovery of the bone quality and the results of the postoperative X-ray. In general, children’s arms heal faster, and the external fixation can usually be removed in about 1 month, and the pins can be removed in about 3 months. However, some patients may have specific fractures or delayed healing, and the time for pin removal needs to be extended accordingly. It is recommended that children with arm fractures undergo regular radiographs and follow the doctor’s instructions to choose the correct time for pin removal.