1,130 HIV infected pregnant women who delivered their babies was acceessed in 6 PMTCT full package in Quang Ninh, Hai Phong, An Giang va National Hospital of Osteric and Gynecology, 953 (84 percent) had received ARV (of different regimens) for PMTCT. 1,134 HIV exposed children was identified, among them 566 babies (50.6 percent) were successfully referred to pediatrics program for further follow up. 467 babies (82.5 percent) had their HIV status confirm, by PCR if less than 18 months old or by antibody test if over. Of those 437 (93.6 percent) are HIV negative and 30 (6.4 percent) are HIV positive. The results show that the risk of mother to child transmission of HIV in mother group who took ARV less than 2.5 times that in the mother group not treated any ARV regimen with RR=0.495 percent CI 0.19-0.83