Bone cancer in children may be related to heredity, environmental pollution, unhealthy diet and low immunity. 1. Heredity: if someone in a child’s family has bone cancer, the chances of bone cancer in other family members, especially the offspring, will be higher. 2. Environmental pollution: at present, environmental pollution is more serious, and many children live in the environment with carcinogenic substances since they are born, such as carcinogenic substances in the renovated rooms, tobacco and alcohol environment will lead to high incidence of bone cancer in children. 3. Unhealthy diet: parents should try to avoid buying food that may be polluted, and give less puffed and fried food to children, bad dietary habits can also induce bone cancer. 4. Low immunity: children’s low immunity can easily cause some diseases, such as chronic inflammation stimulation, and long-term inflammation stimulation can also cause bone cancer. There may be other reasons for children to get bone cancer, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy under the guidance of doctors.