PMTCT is the abbreviation of services to prevent mother to child transmission of HIV. The first AIDS case was discovered at 1981 and up to now no effective medical therapy can stop its spreading. In 2007, it was estimated that about 420 thousand children was infected HIV through mother to child transmission during pregnancy and breastfeeding period. And it is proved that mother during pregnancy and lactation is more likely to pass on the virus to their infants than women infected before pregnancy. It is best for those mothers to receive antiretroviral therapy for both themselves and the babies’ health during antenatal care.