Abstract: Polycystic ovary syndrome （PCOS） is the most common endocrine disorder in females，with a high prevalence. The etiology of this heterogeneous condition remains obscure，and its phenotype expression varies. Two consensus workshops focused on diagnosis （published in 2004） and infertility management（published in 2008）, which previously sponsored by ESHRE/ASRM. Those consensuses are widely cited now. In the present third PCOS consensus report, all current knowledge was summarized, and some blind area on understanding the women′s health of PCOS were clarified. The topics were addressed in a systematic fashion, including adolescence， hirsutism and acne， contraception， menstrual cycle abnormalities， life quality， ethnicity， pregnancy complications， long-term metabolic and cardiovascular health, and the risk of cancer.

Key words: Polycystic ovary syndrome, Hirsutism, Contraception, Pregnancy complications, Quality of life, Insulin resistance, Diabetes mellitus, type 2, Metabolic syndrome X, Cardiovascular diseases, Neoplasms