Ovarian cancer has become a serious threat to women’s life. The cause of ovarian malignant tumor is unclear and difficult to prevent, and the ovary is located in the deep part of the pelvic cavity, which is not easy to be touched or detected, and there are often no obvious symptoms in early stage of ovarian cancer, so when the patient finds out by herself and then seeks for medical treatment, the malignant tumor is often not in the early stage, so the current five-year survival rate of ovarian malignant tumors is still relatively low. Due to the complexity of ovarian tissues, the types of ovarian tumors are the most numerous types of tumors in all organs of the body, so its prognosis is related to the histological classification and grading of ovarian malignant tumors, clinical staging, patient’s age, and treatment modalities. Clinical staging is the most important, and the earlier the stage, the better the curative effect. stage I ovarian cancer is confined to the perimembranous membrane, and the 5-year survival rate can reach 90%. If there is extraperitoneal growths and cancer cells are found in the peritoneal lavage fluid, the survival rate drops to 68%. The efficacy of low malignancy is better than that of high malignancy, and the efficacy of well-differentiated cells is better than that of poorly differentiated ones. Those who are sensitive to chemotherapeutic drugs have better efficacy. If the diameter of postoperative residual cancer foci is less than 2cm, the effect of chemotherapy is more obvious. Elderly patients have low immune function and their prognosis is not as good as young patients. For ovarian tumors, early detection and early treatment should be achieved, and for those who cannot be clearly diagnosed with pelvic mass, early laparoscopy or caesarean section should be performed.