The white stuff secreted in the chest can be divided into four possibilities: first, when in the development of youth or pregnancy, due to the increase in estrogen can stimulate the proliferation of breast ducts, nipples can secrete a little milky white liquid, mostly normal physiological phenomenon. Second, acute mastitis, mostly seen in lactating women, is an acute purulent infection of the breast tissue, and when combined with abscess formation pus can be secreted from the breast ducts by the nipples, often requiring surgery. Third, when women are breastfeeding, due to the role of lactogen, the nipples can secrete a lot of milky white milk, which does not require special treatment. Fourth, cystic hyperplasia of the breast, which occurs in women of childbearing age, can produce yellowish or pale white fluid from the nipples during acute attacks. When there is a white discharge from the nipple, you should go to a regular medical institution to clarify the cause and timely treatment, avoiding blind medication to avoid aggravating the condition.