Background: Ovarian Cancer is the second most common gynecological malignancy and cancer related death in women. Most of the patient with ovarian cancer presented in advanced stage because screening test have low predictive value. The Prognostic Nutritional Index(PNI) was developed in 1984 and used as risk assessment of post-surgical complication and it has recently attracted attention as an indicator of poor prognosis in patient various solid cancer- its calculated using the following method: 10×serum albumin(gm/dl) + 0.005×total lymphocyte count(per mmɜ in peripheral blood, it can reflect both Nutritional and Immunologic status of patients with cancer. Prognostic Nutritional Index recently it has been reported to be useful an independent prognostic factor for survival in different malignant carcinoma. Its reflecting preoperative malnutrition, is useful for predicting the incidence of post-operative complication. Patient with Low prognostic nutritional index has low prognostic index and high prognostic nutritional index has high prognostic index.