Due to the characteristics of fracture repair in children, most of the fractures in children, except for intra-articular and marrow fractures, can be repositioned by closed manipulation and external fixation after repositioning. Plaster fixation is one of the most used and effective methods of external fixation. When using plaster fixation, it is important to elevate the affected limb and closely observe the blood flow of the affected limb, in addition, attention should be paid to prevent skin abrasions and pressure sores. During daily care, we should observe the general condition of the child, the position of the external fixation, and especially the blood flow of the affected limb: skin color, temperature, and sensation. After the swelling subsides, the external fixation should be re-fixed in time if it is loose. If necessary, visit the hospital in time to review the X-ray film to avoid fracture displacement and to understand the fracture situation.