We studied 35 obese children aged 7 to 18 years, as well as 20 children with normal body weight.  A relationship was obtained between the severity of carbohydrate metabolism disorders, dyslipidemia in children and the level of microalbuminuria, which was expressed by an increase in the level of cholesterol, triglycerides, LDL and a decrease in HDL, an increase in immunoreactive insulin and the IR HOMA R index in children with high microalbuminuria.  It was revealed that in children with obesity and microalbuminuria, renal hemodynamic disturbances are determined at the level of the interlobar and arch renal arteries.  A statistically significant decrease in Vmin at the level of large renal vessels allows us to consider these changes as a marker of early disorders of renal hemodynamics.