The best time for a mammogram is 7 to 10 days after menstruation. Women get a mammogram 7 to 10 days after their period, when estrogen has the least effect on the breasts. The breasts are in a resting state. During the examination, the results can more accurately reflect the lesions in the breast. The accuracy of the results can be guaranteed. Therefore, it is recommended to do breast examination within 7~10 days after menstruation. In addition to choosing the right time for breast examination, women should also pay attention to maintaining a happy mood and regular sleep and rest time. It can reduce the influence of objective factors on the results of mammography and objectively reflect the health status of women.