Anemia is one of the most common problems affecting malnourished pregnant women. The high prevalence of maternal anemia is still a cause of perinatal morbidity and mortality are quite large. The prevalence of anemia in pregnant women in BPS Armita in 2014 and in 2016. The purpose of this study was to determine the determinant with anemia in pregnant women in Armita Subdistrict Sintang District 2017. The method used was survey analysis with cross sectional approach. Sample in this study were 30 pregnant women taken by total sampling method. The results showed that 70.0% of respondents who are anemic, 50% of respondents were aged risk, 50% of respondents have more than 2 children, 56.7% of respondents have good knowledge, 60.0% of respondents have less attitude, 53.3% of respondents have bad diet pattern, 53.3% of respondents who are less well utilize health services. Based on the statitical result, it showed that there is a relationship between age ( p value = 0,014), knowledge (p value = 0,042), attitude (p value = 0,015), diet pattern (p value = 0,017), number of children (p value = 0,014), and health services (p value = 0,017), with the incidence of anemia on pregnant women. Pregnant women are advised to multiply knowledge about pregnancy and more vigilant in maintaining health, for health workers can provide health education for pregnant women and provide optimal health care.