OBJECTIVES: The aim of this study is to analize the factors motivating women to take part in breast screening, to gain a better insight into participants’ habits of seeing a doctor, their knowledge about breast screening and mammary cancer, including sources of information they use to gain more knowledge. METHODS: A quantitative, cross-sectional survey was carried out in 2015, by using non-random sample selection method and by selecting women aged 45-65 participated in breast cancer screening, living in Komárom-Esztergom County (n=174). The questionnaire included the following groups of questions: socio-demographic profile, questions about attitudes towards health, habits of seeing a doctor, motivation to take part in screening programmes, knowledge and sources of information regarding breast cancer and the screening process. Data were processed by SPSS 20.0 programme, using descriptive statistical analysis, χ-test, t-test, ANOVA, Kruskal-Wallis test (p<0.05). RESULTS: Average age of participants was 54 years, most of them completed their studies at secondary school and 77.6% of them participated in screening after they had been invited by a personal letter. The most important motivating factors are: „I consider breast screening examination important”. Participants seemed to be well-informed about the breast screening process but they had insufficient knowledge about breast cancer. Women aged 45-54 (p=0.004), living in a family (p=0.024), having a degree (p<0.001) and being employed (p<0.001) proved to have more information about risk factors. Women who frequently visit s doctor, often are involved in other screening programs also. (p=0.001). The possibility of an award and the screening bus proved to be the least motivating factor (p<0.001). CONCLUSIONS: Low participation in screening programmes is mainly related to individual attitude, which is due to insufficient knowledge. In their case health-related  knowledge could be improved and widened by spreading information leaflets and by providing more intense medical advice