Survival period of patients with stage III ovarian cancer is related to tumor pathology type, treatment effect, patient’s physical quality and other factors. Generally, the five-year survival rate of stage III ovarian cancer patients is 25%-30%, which varies from person to person. Ovarian cancer is a common malignant tumor in women, and the cause of ovarian cancer is not clear. Stage III ovarian cancer already belongs to the middle and late stage of cancer, which represents the tumor involving one or both ovaries, the appearance of extra-pelvic lymph node metastasis or peritoneal lymph node metastasis. Survival is also related to the pathological type. Ovarian germ cell tumors and gonadal mesenchymal stromal cell tumors have a better prognosis than epithelial ovarian cancer, and the survival period is relatively longer. Local subtractive surgery is feasible for patients with stage III ovarian cancer in order to remove the tumor as much as possible. After surgery, radiotherapy, targeted therapy, hormone therapy and other therapies are supplemented. After active treatment, the five-year survival rate of patients with stage III ovarian cancer is 25%-30%. It is suggested that patients should pay attention to the active treatment as prescribed by doctors, regular review and keep good living habits after surgery, which can prolong the survival period.