The physical and neurological development of children born to mothers with gestation diabetes mellitus (GDM) is a matter of research interest. We examined 28 children whose mothers were diagnosed with GDM, in the newborn period and at 6 months. By the parameters of physical development at birth the number of children with outstripping development and the average body mass index (BMI) was predominant and by the end of the first semester of life most of the children had the values of the average parameters specified above, that is, normal for that age, range, but the proportion of the deficient BMI remained unchanged. Insulin therapy during pregnancy had no significant impact on the frequency characteristics of children with physical development disorders. The neurological disorders of the six-month-old children born of women with gestation diabetes mellitus and non-targeted metabolic control were more severely represented by sensory sphere disturbances and interaction with subjects; to a lesser extent - by emotional and voice development. The children of this group had the minimum disturbances in the development of the motor sphere.