The sensitivity of the nipples mainly includes the influence of physiological and pathological factors, more often due to physiological factors, such as women in puberty, because the body hormone secretion, will lead to sensitive nipples, a touch of pain, until the end of puberty, the sensitivity will disappear on its own, no special treatment and treatment, pay attention to avoid trauma damage to the nipples. When women are menstruating, pregnant or breastfeeding, due to the influence of hormone levels in the body, the nipples of the breasts will become more sensitive to a certain extent, which is also very sensitive during this period, and will generally be relieved after the end of menstruation or pregnancy. Pathological nipple sensitivity, however, mainly includes acute mastitis, acute nipple infection, and intraductal papilloma, etc., which requires consultation with general surgery or breast surgery and perfect breast ultrasound examination.