Ovarian cancer is one of significant diseases in women worldwide. It is in the seventh place of all malignant diseases in women. Histologically it is divided on epithelial – stromal tumors, germ cell tumors, tumors- specialised stromal tissue and metastatic tumors. Clinical tumors may be benign, malignant and tumors of limited malignant potential. There are three basic theories on the pathogenesis of ovarian cancer, all based on the fact that on the surface of the ovary occurs microtrauma during ovulation, this leads to frequent mitosis, and all this increases the likelihood of mutations and tumor development. Because of the factors leading to less ovulation or the absence of ovulation has a protective effect. Ovarian tumors are clinically classified in stages of FIGO association. Fertility-sparring surgery is a sparing surgical procedure in which the uterus, contralateral ovary and fallopian tubes are kept. This operating approach is indicated for women under 40 years of age who have the indication and those who want to retain reproductive capability. The FSS method is safe for patients with epithelial carcinoma of the stage FIGO 1A, grade G1/2 and FIGO 1C, grade G1. Patients who have been diagnosed with clear cell carcinoma according to FIGO are not candidates for FSS. The exception is borderline tumors and non-epithelial tumors that allow depending on the histological type of FSS-tumor approach in the upper stage of the disease. Patients who were undergoing FSS method usually had the ability to menstruating and those who were pregnant were pregnant until the end of pregnancy and born healthy children without the presence of anomalies, irrespective of whether they received chemotherapy.