A crossed study was carried out on the Parabiotic Symdrome on the period between January 1st and December 31st 1998, on the Neonatological Service of the General Hospital Vladimir Ilich Lenin in Holguin. The universe studied was formed by 7 317 born alive and the sample 87 twin couples. A short description of the Symdrome as well as the parameters to be considered are shown. The results obtained are the following: the 57.15 percent of the homocigotic twins presented the Parabiotic Symdrome. The most common complications are ictericia, respiratory distress, hypoxy and low weight in the new borns. Survival was of 93.75 %.