본 연구는 유방암 검진 수검률 향상을 위한 네비게이터 개입의 효과성을 검증하는것을 목적으로, 서울시 S구에 거주하면서 사회경제적으로 취약한 국가 암 검진 대상자 중 개입 당시 유방암 검진을 받지 않고 네비게이터 개입 이후 유방암 검진 수검 여부를 확인한 730명을 연구 대상으로 하였다. 연구 결과, 첫째, 유방암 검진 수검률은 69.9%로, 전국, 서울시, S구의 전년도 검진 수검률 보다 높았다. 둘째, 유방암 미검진 이유인 ‘시간적 여유 없음’(χ²=30.33, p;This study aims to investigate the effectiveness of patient navigation services to improve breast cancer screening rates. The study samples are 730 socioeconomically disadvantaged women who were identified from S public health center, and were possible to confirm if the cancer screening has been conducted after the first interview. First, the breast cancer screening rate was 69.9%, indicating that this rate was higher than those of nation, Seoul, and S public health center. Second, participants who responded ‘I don’t have time’ or ‘I worry that I have cancer’ were less likely to screen the breasts for cancer. Third, knowledge and beliefs about breast cancer and screening were significantly improved after activities of navigators. Fourth, logistic regression showed that patients who have barriers to screening were less likely to screen for breast cancer, and those who have experiences about navigation services were more likely to have breast cancer screening. This study contributes to the improvement in cancer screening rate and knowledge/beliefs about breast cancer screening, and suggests navigator role to improve breast cancer screening rates.