It is better to have chemotherapy for about 4-6 times after surgery for ovarian cancer, which cannot be generalized and needs to be decided according to specific surgery and patient staging. After comprehensive surgical staging of early-stage ovarian cancer, it is determined that patients with stage I or II, the existence of risk factors, such as poor differentiation or preservation of reproductive function, may need to have supplemental chemotherapy, which generally needs to be carried out 4-6 times. If patients with advanced ovarian cancer have had 3-4 times of neoadjuvant chemotherapy before surgery, they probably need to have another 4-5 times of chemotherapy after surgery, and the total course of treatment should not be more than 8 courses of treatment; if no neoadjuvant chemotherapy has been conducted, and the patients directly undergo adjuvant chemotherapy after surgery, they usually need to have about 6 courses of chemotherapy, so that the treatment of patients with advanced ovarian cancer is more complete. If patients suffer from ovarian cancer, it is recommended to go to hospital to consult relevant doctors, and under the guidance of doctors, treatment should be carried out according to patients’ specific conditions.