Purpose: The purpose of this study was to identify factors affecting prenatal care (PNC) by married immigrant women. Methods: This study was a secondary analysis of "Reproductive Health Status of Married Immigrant Women and Policy Directions in Korea" by the Korea Institute for Health & Social Affairs. The participants were 727 married immigrant women from Asia. Data were analysed using descriptive statistics, $x^2$ test and logistic regression with SPSS 14.0. Results: Of the 727 women interviewed, 91.7% visited prenatal clinic. However, first time for PNC was late and total number of PNC was lower (9.07) than the average of Korean women. Timing and number of PNC in rural area were later and fewer than those in urban area. PNC by these women was significantly lower in those who had lived in Korea longer and for those who the employed. However, PNC was significantly higher in those who attended health education during pregnancy and had not experienced premature delivery. Those who attended health education during pregnancy (OR=2.84, CI=1.49~5.40) or were unemployed (OR=0.51, CI=0.26~0.99) were more likely to have PNC. Conclusion: These findings illustrate the need to strengthen the public information and provide special services to their demands about PNC for married immigrant women.