Patients with early stage ovarian cancer should have 4-6 cycles of chemotherapy after surgery; patients with advanced stage ovarian cancer should have 6-8 cycles of chemotherapy after surgery. For patients who have not undergone surgery, according to their specific conditions during the treatment process, if the patient’s symptoms can be relieved after 2 cycles of treatment, then the number of chemotherapy cycles can be increased to 4-6 cycles; if the symptoms are not relieved after 2 cycles, then it will be determined according to the information on the tumor size and the patient’s conditions obtained from the follow-up visits. The survival rate of patients with ovarian cancer stages Ia and Ib can reach more than 95%, and the recurrence rate is low, so chemotherapy is not necessary and observation is sufficient.