The results showed that prevalence of mothers had at least 3 antenatal check-ups in Quảng Ngai (70.2%) and Phu Tho (65.4%), only 13.8% (Quang Ngai) and 11.6% (Phu Tho) of mothers had at equal or more than 5 antenatal check-ups as Ministry of Health' recomendation.