Chest hair is considered to be the following cases: First, physiological hair, appeared in the male body after puberty, women basically rarely. The male body’s androgen secretion is more vigorous at this time, which is a normal physiological phenomenon. Second, consider the pathology of long hair, female long chest hair consider suffering from polycystic ovary syndrome, mostly due to endocrine disorders in the patient’s body and androgen level secretion is more caused by. In addition to chest hair, armpit hair is also more exuberant, some women will also appear beard. Third, it may be hereditary factors that cause chest hair, considering that the causes of chest hair are more complicated. If more hair affects the appearance or causes inflammation of the hair follicles, it is best to go to the relevant departments of the hospital for further treatment.