A cross-sectional descriptive study was conducted at University Clinics in Kinshasa to describe socio-demographic factors favoring obstructed labor. The survey data included deliveries during the period from January 1 to December 31, 2012. The results of our analyzes included 346 deliveries. Three most significant variables are associated with dystocia at the error threshold of 5%: the low level of education (X2: 29,12), the low attendance at prenatal consultation is less than 3 CPN (X2: 4, 95), and admission to maternity in indirect mode (X2: 5.82). This study shows that socio-demographic factors are particularly important for obstructed labor and increase the risk of maternal death.