Masses in the ovaries can be divided into cystic masses and solid masses. If it is a cystic mass, most of them are benign cysts, and if the diameter is greater than 5 cm, surgery can be considered for treatment. If the mass is solid, most of them are formed by teratoma or malignant tumor of ovary. It is recommended to take blood test for gynecologic tumor, if the carcinoembryonic antigen or carcinoma antigen is already elevated, it is recommended to give surgery as soon as possible, even if it is not elevated, it is necessary to give surgery as soon as possible. If malignancy is suspected during surgery, it is recommended to do frozen pathological section and decide the operation style according to the result.