Objective: The medium-And long-Term effects and side effects of inpatient treatment of patients with anorexia nervosa is still a matter of debate. The German S3-guidelines underline the importance of providing specialized and competent treatment. In this article we focus on the inpatient service structure in German child and adolescent psychiatric clinics with regard to their diagnostic and therapeutic concepts. Methods: A self-devised questionnaire was sent to 163 German child and adolescent psychiatric clinics. The questionnaire focused on the characteristics of the respective clinic as well as its diagnostic and therapeutic strategies. Results: All clinics with an inpatient service for patients with anorexia nervosa (N = 84) provide single-Therapy, family-based interventions and psychoeducation. A target weight is defi ned in nearly all clinics, and the mean intended weight gain per week is 486 g (range: 200 g to 700 g/week; SD = 117). Certain diagnostic tests and therapeutic interventions are used heterogeneously. Conclusions: This is the fi rst study investigating the inpatient service structure for patients with anorexia nervosa in German clinics. Despite the provision of guideline-based therapy in all clinics, heterogeneous approaches were apparent with respect to specifi c diagnostic and therapeutic concepts.