The aim of the study; the Study of physiological causes and risk factors of ovarian cysts in women and Analyzing the results statistically to determine the extent of the relationship between the physiological and biochemical causes of the occurrence of polycysticovaries. Polycystic ovary syndrome (PCOS) is one of the commonest endocrine disorders affecting many females in reproductive period which start from menarche till the menopause and commonly caused infertility around the world, and is characterized by irregular menstrual cycle, Hyperandrogensim and polycystic ovary; it can be considered a conditions involving reproductive, metabolic and cardiovascular components leading to lifelong health implication. Its prevalence among infertile women is between (15% to 20%). There is evidence that PCOS is a pro inflammatory disorder, characterized by the presence of low grade chronic inflammation that correlated with obesity or insulin resistance (IR). The purpose of this study is to investigate the role of study included 100 females diagnosed with PCOS, there were recruited from Al-kut hospital in Wasit during November 2022 until January 2023 , the diagnosis of polycystic ovary syndrome was based on the Rotterdam 2003 criteria. The control group consists of 50 fertile women who have regular menstrual cycle with no sign of hyperandrogenism and subjected to ultrasound examination and have normal hormonal levels. The age was identical in both groups and it was between (20-40) years. . Body mass index (BMI) for both patients and control group was calculated. The questionnaire form has been filled for each patient and control. Hormones levels luteinizing hormone (LH), follicle stimulating hormone (FSH), and thyroid stimulating hormone (TSH) were estimated. The present study was carried out in two parts: immunological and physiological study. ELISA technique has been used to determine the serum level of High –sensitivity C-reactive protin(Hscrp) . The results of Hscrp serum level was significantly increased (p<0.oo5) in pcos patient(17.38+1.36) The results for physiological study demonstrated that insulin serum level recorded a highly significant difference (p <0.05) in PCOS patients compared to control group, the mean level of this hormone for PCOS patients and control were (17.18±2.84) μIU/mL, (8.68±1.97) μIU/mL respective. While this study showed there were no significant differences in serum levels of T.protin, and TSH between PCOS patients (8.08± 1,28). ng/mL(, 0.79±0.17)μg/dL, and control group (7.09±0.51) ng/mL,( 1.20±0.09) μg/dL. This study illustrate that the serum levels of Hscrp and insulin were elevated in PCOS comparing to healthy women and this high levels related to PCOS independent on the presence of obesity or IR., and there was a positive correlation between the insulin hormone with the parameters Hscrp and this may be due to the background of PCOS which considered as inflammatory disease The reslts showed that ,Creatin ,cholesterol,GPT, and LDL ,Lympho ,TG were significantly increased in pcos patients than control group