Whether an ovarian tumor of 10 centimeters is malignant or benign is not certain, and the diagnosis is mainly based on pathological results. Ovarian tumor 10 cm indicates that the tumor is relatively large, usually cause obvious clinical symptoms, such as abdominal pain, but can not rely solely on the size of the tumor to determine the benign or malignant, usually need to do further pathological examination. If it is a benign ovarian tumor, it can be surgically removed, and after the operation, it is usually not easy to recur, and it is not easy to leave other sequelae. However, if it is a malignant tumor of the ovary, i.e. ovarian cancer, it usually needs to be surgically removed first, with further radiotherapy, chemotherapy and other treatments after surgery, and the chances of recurrence and metastasis are higher than that after surgery. Ovarian tumor of 10 centimeters should promptly cooperate with doctors to take further examination and treatment after clear diagnosis.