For the phenomenon of girls’ stomach hair, if it is only sparse sweat hair, hair, is a normal phenomenon, if the hair is more, dense, black color change, usually belongs to the phenomenon of pathology. For girls with long hairy stomach, the common pathological causes are: disease factors, bad lifestyle and so on. 1. Disease factors: when a woman suffers from polycystic ovary syndrome, congenital adrenocortical hyperplasia and other diseases, it is easy to cause excessive secretion of androgens, resulting in excessive female body hair appearing belly hair, and may even appear to have the physical characteristics of a beard. 2. Bad lifestyle: for example, frequent consumption of hormone-containing food or often stay up late, etc., it is easy to cause endocrine imbalance, so that women appear on the stomach hairy symptoms. It can be seen that, for the phenomenon of women’s stomach hair growth caused by pathological reasons, it is recommended to treat the symptoms.