Gynecomastia hair growth is considered to be caused by physiologic and pathologic factors. Hair is an indispensable part of the skin, and most of the human body is covered by body hair. Breast hair growth may be the beginning of the gradual emergence of female secondary sexual characteristics, the body’s sex hormone levels began to change, at this time do not need special treatment, if you think it affects the aesthetic, can be used to laser surgical hair removal. Increased androgens in the female body can lead to thickening and darkening of body hair on the breasts, so we need to be alert to a variety of diseases that can lead to abnormal levels of androgens and estrogens, commonly known as polycystic ovary syndrome, which can lead to abnormal growth of hair in many parts of a woman’s body, and at the same time, the ovaries will be enlarged due to abnormal hormone secretion, with countless fluid-filled sacs appearing, androgens in the patient’s body are increased in level, stimulating the body to appear after the symptoms of hairy The patient’s body has increased levels of androgens, which stimulate the body to develop hirsuteness, including the breasts, chest, and calves. After diagnosis of Polycystic Ovary Syndrome, the patient needs to consult a doctor in time to replenish estrogen or reduce the abnormal secretion of androgens. In addition, women with adrenocortical dysfunction and those who consume foods that contain too much androgen may also experience abnormal breast hair growth, and the cause of the problem needs to be identified in a timely manner so that targeted treatment can be carried out.