Research in mental health services in Germany is of increasing relevance. To this end, the recently founded "Mental Health Working Group"as part of the German Network of Health Services Research (DNVF) has written a discussion paper presenting key specifics, challenges, and goals of health service research in the field of mental health. Some research-relevant specifics in the area of mental health care, pragmatic challenges of research organization, ethical problems, and particular research topics in this field are presented and discussed critically.