Abstract: Polycystic ovary syndrome （PCOS） is a common disorder among reproductive-aged women.
Recent research has elucidated that as the prevalence of pediatric obesity escalates, the morbidity of polycystic ovary syndrome in adolescent females is also increasing. Obesity contributes to the pathophysiology of polycystic ovary syndrome by increasing free insulin concentrations. Hyperandrogenism in PCOS can also increase visceral fat. Obesity can increase the morbidities of associated metabolic and cardiovascular dieases including insulin resistance （IR）, dyslipidemia, hypertension and subclinical cardiovascular disease such as atherosclerosis. Early identification of adolescent polycystic ovary syndrome will help to correct and block the endocrine disorders, as well as the complications in the near future timely.

Key words: Polycystic ovary syndrome, Adolescent, Obesity, Hyperinsulinemia insulin resistance, Metabolic syndrome