248 twin pregnancies had been examined retrospectively between 1980 and 1988. Each case of twin pregnancy was confronted with a singleton pregnancy of similar age and parity as matched-pair. Aim of the study was to examine the course of delivery as well as fetal outcome. Main reasons of prematurity have been preterm uterine contractions and rupture of fetal membranes. Rates of cesarean sections had been 41.2 per cent in twin pregnancy and 18.8 per cent in singleton ones. Apgar score had been better in singletons. Ph of umbilical artery had similar values in singleton pregnancy and first twin, but lower values in the second twin. Also nowadays twin pregnancy is a risk pregnancy with a 2.3 fold higher perinatal mortality compared with singleton pregnancy in our matched-pair-group.