In the French standard treatment of ovarian cancer in 2007, interval debulcking surgery is an option. The standard treatment is always upfront debulcking surgery when no macroscopic residu is possible. In the recent EORTC randomized study, there was no significative difference between upfront debulcking surgery and interval debulcking surgery after neo-adjuvant chemotherapy. In this paper, we have discussed about the first treatment of ovarian cancer.