Introduction: Polycystic ovary syndrome (PCOS) is one of the most common hyperandrogenic disorders in the fertility age. In patients suffering from this disease, etiologies and clinical manifestations such as insulin resistance, hyperinsulinemia, and hyperandrogenism of insulin resistance are seen. According to statistics, about 50 to 70 percent of women with this syndrome have different degrees of insulin resistance that it is most important in term of common health of these subjects. The aim of this study was to evaluate the prevalence of insulin resistance in a number of patients with PCOS referred to Sarem Hospital in 2020-A2021.
Martial and methods: This study was a descriptive cross-sectional study with a convenience sampling method among PCOS patients with an age range of 27 to 30 years referred to the infertility special clinic. Collected data were analyzed using descriptive statistics with SPSS software version 19. 
Results: A total of 162 subjects with PCOS in sonography were entries in this study. The test of insulin resistance evaluation was performed in a fixed method in A87 of them and the rest were excluded from research due to incomplete records. In this research, the prevalence of insulin resistance was 69.3%.
Conclusion: The prevalence of insulin resistance in patients with polycystic ovary syndrome in this study was almost consistent with the maximum of presented statistics in previous studies and it is necessary to consider this point in the treatment of these patients.