BACKGROUND: Polycystic ovary syndrome(PCOS) is one of the most common endocrine disorder affecting women in reproductive age. No single etiologic factor fully accounts for the spectrum of abnormalities in the polycystic ovary syndrome. Different changes in hormonal, metabolism and the inflammatory markers as squealy of PCOS with adverse effect on the women life. OBJECTIVE: To study the relationship between polycystic ovary syndrome and levels of C-reactive protein, human interleukin and hormonal and metabolic alteration in women with PCOS PATIENTS AND METHODS: Thirty women with Polycystic Ovary syndrome (PCOS) and other thirty women without PCOS were included. Venous blood samples were taken in early follicular phase of menstrual cycle [day 2-6] for luteinizing hormone (LH), follicle-stimulating hormone (FSH), and testosterone. Serum level of Human Interleukin 1B (IL-1B) was quantitatively determined. Blood samples were also tested for detection of CRP (C-reactive protein, in addition to levels of cholesterol, triglycerides. RESULTS: The mean cholesterol level was significantly higher in PCOS group rather than controls; (188.3 ± 7.2) vs. (168.7 ± 6.1) respectively. Mean LH level was higher in PCOS women than control (13.3 ± 2.4 IU/L) vs. (5.85 ± 1.47) IU/L, while in contrary mean FSH level was lower in PCOS cases. The mean serum testosterone in PCOS group was significantly higher than in controls, with no significant difference regarding IL-1B, but again it was significant in cases of CRP. CONCLUSION: PCOS was associated with higher levels of cholesterol, LH, and serum testosterone with lower levels of FSH. Positive C-Reactive Protein was more frequent in PCOS cases. Still serum level of Human Interleukin 1B (IL-1B) was not significantly affected by PCOS.