The specific method is: stand in front of the mirror after bathing and examine, observe from the mirror whether there is any abnormality in the skin of bilateral breasts, whether there is any nipple invagination, and whether there is any liquid overflow from the nipple when squeezed. In the prone position, lie flat on the bed, centering on the nipples, with the four fingers together, do a circular examination with the fingers against the skin in a clockwise direction. Apply even pressure to see if nodules or lumps can be palpated, and never pinch the breast with the index finger and thumb. If you find any abnormalities, you should go to a regular hospital and have further examination by a breast specialist. The survey also shows that only 5% of women have an annual breast disease examination and 23% of women think it is not necessary to have a special breast disease examination. The incidence of breast cancer in China’s cities has ranked first in the world in terms of tumor incidence among women in large cities. Therefore, adult women, regardless of whether they have children or not, should have an annual breast examination and, depending on the circumstances of the examination, mammography or breast ultrasound examination.