Causes of children can not eat fat, mainly including the following aspects: 1, due to genetic physique factors determine. If the child’s father or mother are relatively thin body, under the role of genetic genes, most of the children will also appear to eat not fat. If the child’s mental state is relatively good, growth and development, appetite are normal, this is a situation that does not need to be dealt with. 2, caused by the child’s spleen and stomach absorption capacity is relatively poor. If the spleen and stomach transport ability is weak, although children eat more food, but also appear to eat fat situation. The child’s nutrients are absorbed by intestinal parasites, so the child does not gain weight, often accompanied by abdominal pain, perianal itching at night and other symptoms. Need to promptly deworming treatment.