Abstract: Polycystic ovary syndrome（PCOS） is one of the most common endocrinal and metabolic diseases in fertile woman. There are many controversies on PCOS diagnosis because of its diversity and heterogeneity in clinical manifestations， and the phenotypes overlapping with normal individuals. Since PCOS was described for the first time in 1935， three consensuses have been proposed successively. They are NIH criteria by National Institutes of Health，Rotterdam criteria by both European Society for Human Reproduction and Embryology（ESHRE） and American Society for Reproductive Medicine（ASRM）， and AES criteria by Androgen Excess Society. In 2011，“Diagnosis criteria for Polycystic Ovary Syndrome” was established by Chinese Medical Association， which was supported by Ministry of Health of China. This Chinese criteria was based on the currently available evidences in Han Chinese. The contradictions of diagnosis have influence on the standardized treatment. So far， the consensus，reached by PCOS Consensus Workshop Group，on the treatment of PCOS infertility， has been well-accepted. This paper described the main criteria of PCOS and the consensus on the treatment of PCOS infertility.

Key words: Polycystic ovary syndrome, Infertility, female, Diagnosis, Therapy, Criteria