During the investigation period from 1978 to 1986 the adolescents had been compared with two control groups. When comparing obstetrical parameters such as pre-eclampsia, prematurity, operative delivery, Apgar under 4, acidosis with a pH-value of blood under 7.10, malformation and perinatal death significant differences could not been proved. The statistically guaranteed high quota of perinatal mortality in prematurities under 2.500 g gives occasion to pay attention to predisposing factors in the prenatal care as well as focusing the good neonatal management. The investigations exhibit the delivery in adolescents as a small side group, which portion shows a falling tendency in the whole delivery group. They must be cared for attentively in fundamental prenatal care, whereas there is no higher obstetrical risk for adolescent primipara. The comparatively higher portion of primigravida teenagers in the whole interruptio group points out the problems in applying contraceptional measures at this age.