**1. Introduction**

Children and adolescents are the future of every country, and their physical and even psychological health is a place where every country attaches great importance. In recent years, scholars around the world have done a lot of research on the mental health of children and adolescents, and they have found that well-being plays an important role in the healthy psychological process of children and adolescents, which can not only help individuals better integrate into society, but also lay a good foundation for the further development of individuals. In the process of studying the mental health of children and adolescents, a large number of scholars have found that mental illness has a huge impact on individual well-being, of which ADHD is one of several common childhood psychiatric disorders.

ADHD is the most common neurodevelopmental disorder, affecting more than 5% of children and adolescents in the world, and the pain caused by its symptoms can seriously damage the well-being of children and adolescents, which in turn affects the process of their integration into society and the process of self-development [1]. This chapter focuses on the following points: sources of well-being in children and adolescents, factors that affect the well-being of individuals with ADHD in children and adolescents, and how to improve the well-being of individuals with ADHD.
