Introduction: Considering the increasing number of breast cancer patients in Iran, as well as other developing countries, and due to its preventable, screening programs in an asymptomatic population and identifying individuals with suspected signs before the onset of the disease, is undeniable. If breast cancer is not detected and treated promptly, death will occur. But if the disease is diagnosed in early stages and treated timely, the chance of recovery will increase. The aim of this study was to investigate the status of women\'s performance in screening programs and determine the factors affecting it (breast self-examination, clinical breast examination and mammography) in women referred to Isfahan health centers.\nMethods: This descriptive-analytic cross-sectional study was conducted on 10,000 women aged 20-65 years old in Isfahan province with multistage cluster sampling. The total number of 9260 women responded completely to questionnaire and entered in the final analysis. The latent class regression analysis was used to evaluate the women\'s performance of breast cancer screening (breast self-examination, clinical breast examination and mammography) and factors affected this performance.\nResults: Overall, 63.5 % of women had Breast Self-Examination, 49.8 % had Clinical Breast Examination and 15.4 % had performed mammography. Based on the latent class analysis, 50.34 % of the women had poor performance and 49.66 % had good performance on screening methods. The most effective factor in the level of performance is related to history of breast disease (P<0.001). Breastfeeding (P<0.001), attitude toward this cancer (P<0.001), marital status (P<0.001) and awareness of different components of breast cancer (P=0.006) were among other variables affecting on the performance of women participating in this study. Increased number of children also had an inverse effect on the level of performance of women (P<0.001).\nConclusion: In this study, similar to other studies in Iran, in spite of the relatively high awareness, preventive behaviors have not been reported at optimal levels. The performance of women in breast self-examination was better than other screening methods. Approximately half of the women referred to the doctor and midwife for a clinical examination of the breast. The most important predictor of women\'s performance was the history of breast cancer. Educational programs are recommended through public media to encourage women to perform breast examination regularly.