[en] The aim of this work was evaluation both of levels and the dynamics of morbidity of breast cancer of women in the Mogilev region after Chernobyl accident. Women of towns and rural women were examined. It was showed decrease of morbidity correlation of 'town-village' in Mogilev region, peak removal of morbidity of rural women in Mogilev region for 10 years to rejuvenation course, considerable acceleration of increase rates of morbidity of the oldest rural women (75 years and upwards). The biggest rates of morbidity change were revealed for rural women lived in area with contamination density of cesium-137 equal 185-555 kBq/m². Radiogenic breast cancer will be able to appear from 10 years after radiation effects of persons, whom were 20 and more years old at the moment of Chernobyl accident. It may suppose influence of radiation factor on this change. But only further epidemiological researches and dose dependence analyse will be able to positive or negative answer