Introduction: Incidence of diabetes in children, causes and risk factors for this complication, types of diabetes in children, the need to follow the recommendations, management and control of type 1 diabetes and nutritional tips to control diabetes in children, we will report. Type 1 diabetes is more common in children and type 2 diabetes is more likely to occur in adults, especially after the age of 40. Although type 1 diabetes accounts for only five to 10 percent of all cases of diabetes, it is the most common type of diabetes in children. In fact, 85% of the most recently diagnosed types of diabetes are in children and young people under 18 And for this reason, it is also called juvenile diabetes. Conclusion: Obesity is a major cause of diabetes in children. In this study, based on the available scientific evidence, the relationship between obesity and diabetes in children and its mechanism and pathophysiology are accurately stated.