When a child is treated with a cast after a fracture, the following things should be noted. First of all, it takes some time for the cast to cure, about 20 minutes for initial curing and 24 hours for complete curing. During this period of time, children may move too much, which may cause the cast to loosen and break, so it is necessary to limit excessive activities within 24 hours. Secondly, after the cast is fixed, observe the blood circulation of the limb, if you find numbness, coldness, or whitening of the limb, loosen the cast or go to the hospital for consultation. Then, the plaster is relatively hard, and the skin tissue of children is relatively delicate, so hard plaster can easily cause pressure sores on the skin and tissues. If this happens, the cast should be replaced and treated in a timely manner, otherwise pressure sores will appear, affecting the healing of the bone and the treatment effect. Finally, regular review is necessary. Children are fixed and fractures grow very fast, so regular review is necessary to prevent fracture displacement or non-removal of the cast after the fracture has healed, which may affect the child’s functional recovery.