This study was conducted as a double-blind randomised controlled trial to determine the effect of education using audio-visual methods and simulation techniques on breast cancer screening and breast cancer fears in illiterate women. The study was conducted in the villages of a district in the south of Turkey with a distance of over 100 km to health institutions. The sample size of the study was calculated with the G\*Power 3.1 programme based on the mean breast cancer fear scores (22.42±8.30 for those without family history and 28.14±6.23 for those with family history) in a study, with a 95% confidence interval, 5% margin of error, 0.92 effect size and 95% power. As a result of this analysis, the minimum sample size required was determined as 64 people in total. However, a total of 120 women were included in the study in order to increase the power of the research, to prevent possible data loss and to make the results more reliable. Participants were divided into intervention (n=60) and control (n=60) groups by simple random sampling method.