Mammary gland hyperplasia has little to do with breast cancer, neither suggesting a precancerous lesion nor implying that it will turn into breast cancer, and it does not mean that it is a precursor to breast cancer, which is now considered to be a physiological functional change caused by estrogen and progesterone disorders, and currently the medical profession has some doubts about the mention of mammary gland hyperplasia, and generally advocates breast pain as the main concern of mammary gland hyperplasia, focusing on solving breast For young women who think that breast enlargement will become breast cancer, they rush to the hospital as soon as they have breast pain and have a panic mentality, but such young patients generally have breast pain as a result of congestion and swelling of the breast. This is a physiological change of the breast. For another group of patients, it is necessary to eliminate the paralyzing misconception that breast enlargement will not turn into breast cancer, and it is possible that when the breast is sore or hard lumps are felt, they think it is breast enlargement and do not go to the hospital. Breast pain is a manifestation of breast enlargement and failure to see it may delay the timely detection of a potential breast cancer that exists at the same time.