If breast lumps appear during puberty or physiological period, it is considered to be a normal physiological phenomenon that the increase in estrogen level causes breast parenchymal hyperplasia and interstitial edema. After the first menstruation or the end of menstruation, the hard lumps in the breasts will disappear on their own. If women of childbearing age have bead-like hard lumps in their breasts, they are considered to have breast hyperplasia, which is an irreversible pathological change of the breasts, and the size of the hard lumps may become smaller after the end of menstruation, but they will not disappear on their own. If the hard lumps appear during the breastfeeding period, it is mainly acute mastitis caused by milk stagnation, and the hard lumps in the breasts will disappear after active milk emptying and symptomatic treatment. If you suffer from proliferative diseases of the breast parenchyma, such as breast fibroma, breast cancer, intraductal papilloma of the breast, you need surgical treatment, and it will not disappear on its own.