The causes of ovarian cancer are mainly considered to be related to heredity, gene mutation, chronic gynecological inflammation or environmental factors, etc. The specific causes are still unclear. 1. Heredity: Ovarian cancer is a kind of malignant tumor, and it cannot be ruled out that it has some relationship with heredity. If there are patients with ovarian cancer in the family, the prevalence rate of their offspring is slightly higher than normal people. 2. Genetic mutation: If there is genetic mutation, it may cause cancer. 3. Chronic gynecological inflammation: some women have chronic gynecological inflammation, which repeatedly stimulates the ovaries and may increase the incidence of ovarian cancer. 4. Environmental factors: If women are exposed to chemical pollution or radioactive pollution for a long time, it may cause abnormal cell division and proliferation, leading to the occurrence of ovarian cancer. If ovarian cancer is found, it needs to be treated as early as possible, such as removing the tumor by surgery. If it is not detected in time, the prognosis is usually poor, and the cancer cells may metastasize in the later stage.