The analysis concerns 16 cases of births of conjoined twins reported in the Polish literature. Cesarean section was applied in 2 cases, while 13 cases were spontaneously delivered without destructive operations. Embryotomy was necessary in 1 case. Liveborn fetuses were 7, while 9 were stillborn; 6 were male and 10 female. The heaviest body weight amounted to 5810 g, and the lowest to 1200 g. When the diagnosis of live conjoined twins is possible before the second stage of labor, Cesarean section should be performed. Treatment during vaginal delivery depends on the ensuing conditions.