The differentiation between benign ovarian tumors and malignant tumors is mainly as follows: 1. benign tumors grow slowly while malignant tumors grow relatively fast. 2. benign tumors will not show elevated carcinoembryonic antigen and carcinoembryonic antigen when blood is drawn for gynecological tumors, while malignant tumors tend to show elevation. 3. through ultrasound examination, if it is a benign tumor, the boundary is basically clear, while the boundary of malignant tumors is not. clear. In addition, if surgery is done, frozen pathological section can be done intraoperatively for further diagnosis. If the frozen section is malignant, it is recommended to expand the scope of surgery during the operation.