The development of children and adolescents is significantly influenced by their family and social environment. Systemic methods are among the most commonly used approaches in child and adolescent therapy, as well as in educational and life counseling, and in both outpatient and inpatient youth services. Rüdiger Retzlaff presents a compact introduction to systemic work with children and adolescents in this book. In addition to systemic basic assumptions, theoretical concepts, and disorder models, he explains developmental psychological foundations that are relevant for practice. Through case examples, crucial factors such as social living environments, family history, and processes of meaning-making are illustrated. Particularly in these case descriptions, it becomes clear how important it is for successful work with children to engage with their world and their language.