If blood flow signals are found in the ovary through ultrasound, it does not necessarily represent a pathological state clinically, because any tissue or organ has blood supply, for example, arterial or venous blood flow can be seen in the organ during ultrasound, which is a normal phenomenon. However, if a tumor is seen in the ovary and blood flow is seen inside the tumor, this situation often suggests the possibility of malignancy in the clinic, and it is recommended that blood be drawn to check the three gynecologic oncology tests to find out whether the carcinoembryonic antigen is abnormally elevated, and then to make the next step in the treatment. In addition, if ultrasound examination reveals localized ovarian tumors with cystic echogenicity or mixed echogenicity, the possibility of malignant tumors is relatively high, so further examination is recommended.