The final cause of death in patients with advanced ovarian cancer can be pain, multiple organ failure, and severe malnutrition. Ovarian cancer is a common malignant tumor of female reproductive system, which can be caused by various factors such as hormone level and heredity. When the disease develops to the advanced stage, the tumor enlarges and compresses the corresponding organs, and the clinical manifestation of severe pain may appear, which brings great physical and psychological pressure to the patients. In addition, due to the multiple metastases of the tumor in the advanced stage, it can lead to the occurrence of multiple organ failure. For example, it is manifested as jaundice, respiratory difficulties, blurred consciousness, severe ascites and so on. In turn, the body functions will be disorganized and unable to operate normally, which will eventually lead to death. Due to the consumption of the body by tumor development, side effects of treatment, and disorders of the gastrointestinal tract, patients in advanced stages can suffer from severe malnutrition, which can be one of the causes of death.