Supracondylar humerus fracture in 8-year-old children usually heals in 6~8 weeks, and some of them may be delayed, and the specific healing time is also related to the degree of fracture injury and treatment methods. If the supracondylar humerus fracture of 8-year-old children is not comminuted, only one fracture line, the fracture displacement is not big, and take the plaster fixation, this situation heals faster, usually about 6~8 weeks can heal. If the supracondylar humerus fracture is comminuted, the fracture is displaced, the recovery is slower, usually take surgical internal fixation, closed-displacement internal fixation is faster than cut-displacement internal fixation recovery, usually about 10 weeks. Therefore, how long it takes for a supracondylar humerus fracture to heal in an 8-year-old child is determined by the degree of injury and the surgical procedure used to treat the fracture.