Postpartum hairiness may be caused by endocrine disorders, polycystic ovary syndrome and medication factors. 1. Endocrine disorders: after giving birth without paying attention to rest, often stay up late to take care of the child, poor recovery of all aspects of the body may cause endocrine disorders, the body’s androgen secretion increases, which may lead to post-partum hair exuberance. 2. Polycystic ovary syndrome: postpartum women with polycystic ovary syndrome, mainly manifested as hyperandrogenemia, androgen increase can lead to postpartum hairy. 3. drug factors: postpartum women have to take exogenous drugs, taking glucocorticoids, such as methylprednisone, betamethasone, long after taking the drug adverse reactions can lead to hairy, there will also be postpartum hairy phenomenon. Postpartum hairy more causes, serious recommendations for timely medical treatment.