Ovarian cancer is a malignant tumor that occurs in the ovary. It has many tumor types and can occur in women of all ages, and the older the age, the higher the incidence. The principle of treatment is a comprehensive treatment plan based on surgery with the addition of chemotherapy and radiotherapy. Before surgery, various examinations will be performed to help doctors understand the staging of ovarian cancer and tumor types. In case of early stage patients, comprehensive staging surgery will be performed, and the scope of surgery will be decided according to the patient’s age, fertility requirements and the condition of the opposite ovary; young patients will try to preserve their fertility function, while perimenopausal women can undergo total hysterectomy and double adnexal resection, and in case of advanced stage patients, tumor cell reduction surgery ( In advanced patients, tumor cytoreductive surgery is performed (the primary lesions and metastases are removed as much as possible, so that the residual tumor foci are less than 2 cm in diameter), and the effect of comprehensive tumor cytoreductive surgery is very significant for subsequent chemotherapy. Chemotherapy is the main adjuvant treatment. Because ovarian cancer is sensitive to chemotherapy, it can achieve certain efficacy even if it has metastasized extensively, and can be used to prevent recurrence as well as for those who cannot be completely removed by surgery. For advanced patients who cannot undergo surgery, chemotherapy can reduce the size of the tumor and create conditions for future surgery. For the treatment of ovarian cancer, due to the diversity of tumor types, different stages, and different conditions of patients, individualized treatment should be adopted, and surgery plays a key role, especially the first surgery is more important.