This article discusses the non-harmonious type of parent-child relationship and its impact on the development of overweight in adolescent children. The main factor in the development of BMI in children is the family relationship, so it is important to identify the characteristics of the non-harmonious type of parent-child relationship and its impact on the development of overweight in adolescents. The problem of overweight in children can have serious consequences in adulthood, leading to health risks and negatively affecting the quality of life. The wide range of problems associated with overweight requires additional and in-depth research to create a healthy and happy generation of people. This requires identifying the causes of the problem, its development dynamics, and external factors, and supplementing the current research base to address this issue. Practical significance: This study presents a scheme that reflects the characteristics of an inharmonious type of parent-child relationship and examines its impact on BMI in adolescent children. Therefore, this article provides valuable insights for creating an effective psychotherapeutic program for children with BMI and their families.