Bone nonunion is not self-healing. The occurrence of bone nonunion is mostly related to infection, unsatisfactory alignment of the fracture ends, instability of the fracture site, poor local blood supply and so on, and it cannot be healed by itself. The main treatment for bone nonunion is surgical intervention to reposition the fracture end, make the fracture locally stable, and if necessary, bone grafting can be used. Meanwhile, the patient’s general condition can be improved, nutrition can be strengthened, smoking and alcohol cessation, and anti-infection treatment can be carried out. After surgical intervention, the prognosis of bone nonunion is usually good, need to strictly cooperate with the doctor’s guidance, under the scientific rehabilitation exercise and strengthen the nutrition, the fracture can reach the standard of healing. When bone nonunion occurs, it is necessary to actively consult the doctor and follow the doctor’s instructions for reasonable diagnosis and treatment.