Only when you really know your breasts can you face the discomfort and pain in your life with openness, then breast examinations are especially important. Below we describe when a woman’s breasts should be examined. Every month, on the 7th to 11th day of menstruation when the breasts are in a resting state, self-examination can be performed. Menopausal women can perform self-examinations on the same day of the month. Women under 40 years old can have an annual ultrasound examination; women over 40 years old can have an annual ultrasound examination, or a mammogram or DR examination every one or two years; women with benign lesions should have an ultrasound examination every six months; those with a family history of genetic disease and benign breast lesions should be more closely and actively examined.