The location of abdominal distension in ovarian cancer is often right lower abdominal distension or left lower abdominal distension at the beginning, but with the development of ovarian cancer tumor, the entire lower abdomen may become distended, and if ovarian cancer has metastasis to the peritoneum, the whole abdomen may become distended. If abdominal distension occurs, it is best to go to the hospital to have an abdominal ultrasound and a transvaginal gynecological ultrasound. If an occupancy is found in the ovarian adnexal area, further examination is needed to confirm the benignity or malignancy of the occupancy and to provide appropriate treatment according to the benignity or malignancy.