Aim: Nutritional factors affecting prevalence of anemia among pregnant women. Methods: A cross-sectional study was conducted in the field practice area of department of community medicine, NMCH Patna, Bihar, India, for 10 months. All pregnant women registered at UHTC and RHTC were included in the study. Sahli’s method was used to estimate the concentration of hemoglobin in capillary blood. Results: Majority (88%) of the women get married between age 20- 30 years. Overall, more than half (62.5%) of the respondents were Hindu and 37.5% were Muslims by religion. In urban area, 60% were Hindu while 40% respondents were Muslims. In rural area, 65% respondents were Hindus while 35% respondents were Muslims. In urban area, 66% respondents lived in nuclear family, and in rural area 64% respondents lived in nuclear family. Overall, the average family size was 4.9. About half (54%) of the women were literate, 94% were housewives and 98% were married. More than half (56%) of the women had 4-6 months of gestational age. The overall prevalence of anemia was 73.5% among the pregnant women. The moderate anemia was found in 42.86% women, mild anemia was in 47.62% and severe anemia was in 9.52%. The calorie intake was significantly (p<0.0001) lower in anemic women (1821.59 ± 269.8) as compared to non-anemic women (2312.17 ± 359.97). The protein intake was significantly (p<0.0001) lower in anemic women (35.98 ± 11.03) as compared to non- anemic women (42.21 ± 11.74). The fat intake was significantly (p<0.0001) lower in anemic women (34.74 ± 11.26) as compared to non-anemic women (40.12 ± 14.12). The iron intake was significantly (p<0.0001) lower in anemic women (24.12 ± 5.78) as compared to non-anemic women (26.74 ± 6.63). The folic acid intake was significantly (p<0.0001) lower in anemic women (138.54 ± 34.74) as compared to nonanemic women (148.42 ± 42.15) (Table-3). Conclusion: The micronutrient intake was lower in the studied population and it was found to be significantly associated with problem of anemia amongst pregnant women.