With modern changes in diet structure and environmental factors, the age of onset of diabetes is getting lower and lower. In addition to type 1 diabetics, more and more children and adolescents are suffering from type 2 diabetes, and parents need to pay attention to this. In recent years, many parents bring their children to the hospital for diabetes treatment. At the same time, they are also very confused: why does my child have “old age disease” at such a young age? Due to the pressure of school work, children are in a state of long-term mental stress, and long-term mental stress can lead to a rise in the body’s glucagon group to antagonize the insulin within the body, which can induce diabetes. And because of the heavy homework tasks, long hours sitting at the desk lack of exercise, coupled with a long time online games, watching TV, etc., making many children become both fat and do not like to exercise. These are all factors that can lead to diabetes in adolescents. Juvenile diabetes is mainly divided into type 1 and type 2 diabetes. type 1 diabetes is an autoimmune disease that is characterized by an absolute lack of insulin in the body and requires lifelong use of exogenous insulin to control blood glucose. type 2 diabetes is characterized by a combination of environmental and genetic factors that lead to insulin resistance and defective insulin secretion. family history of diabetes and obesity are important causes of the development of type 2 diabetes. In the past, the average adolescent with diabetes suffered from type 1 diabetes, but the number of adolescents with type 2 diabetes has increased two to three times in the last 30 years compared to the previous period. Data show that more than 85% of adolescents with type 2 diabetes are obese or overweight. This is mostly caused by irrational diet and unhealthy lifestyle, and parents must pay attention to it. Prevention of the disease is more important than treatment. Parents should help their children to do prevention work. First, parents should adjust their children’s diet. Avoid children to eat high-calorie, high-fat, high-protein, high-carbohydrate and low dietary fiber foods for a long time. Some children and adolescents, for a long time, use cola to replace plain water, which is also one of the important reasons for susceptibility to diabetes. Secondly, we should increase the amount of exercise for children, not because of “homework” and withhold exercise time for children, with a good body in order to read more effectively. Finally, regular medical checkups are an important means of prevention and early detection of disease, so parents should not neglect regular medical checkups just because they think their children are healthy.