The following tests are needed to confirm the diagnosis of ovarian cancer: 1. MR examination is needed to understand whether the ovary is locally cancerous through MR scan, which can make a clear diagnosis. 2. three laboratory tests of gynecologic tumors are needed, if a mixed mass is found in the pelvis through ultrasound examination, blood sampling is needed to understand whether carcinoembryonic antigen and carcinoma antigen are abnormally elevated, and if they are abnormally elevated, combined with clinical ultrasound examination, a clear diagnosis can be made. 3. The final clinical diagnosis should be based on pathology, for example, frozen pathological slides can be done during surgery, and the corresponding diagnosis can be obtained through pathological slides before deciding the way of surgery, which is the final diagnosis.