Treatment methods of ovarian cancer include: 1. Surgery: it can remove the tumor to the maximum extent and remove the peritoneum or abdominal lymph nodes that may be invaded by the tumor. In early stage ovarian cancer, radical oophorectomy is done, and in late stage, reduction surgery can be applied, which cannot completely remove the tumor and is called palliative reduction surgery; 2. chemotherapy: including neoadjuvant chemotherapy before surgery, and adjuvant chemotherapy after surgery, and then long-term maintenance therapy; 3. radiotherapy: used for pelvic confined masses, and chemotherapy can be combined with radiotherapy if the effect is not good; 4. targeted therapy: including anti-angiogenic drugs, and PARP inhibitors. Experienced doctors can combine the above treatments organically, and rational arrangement is the best treatment plan.