Anorexia nervosa concerned, firstly, because this disorder is associated with many medical complications and secondly, because it is linked with a poor prognosis. Given these facts, it is imperative that effective treatments be available for anorexia nervosa. This article aims to present a systematic review of the literature on the best therapeutic modalities in the field of anorexia nervosa. Among these, we find outpatient treatment, importance of multidisciplinary team and various therapeutic approachs, like familial therapy.