Introduction: The relationship between parents and children is the foundation of family life, which determines the mental and emotional well-being of each family member. Therefore, understanding the impact of harmonious relationships on personal development is important and relevant to society, as it can have far-reaching consequences for the quality of life. Objective: The purpose of this study was to investigate how harmonious relationships between parents and children affect the child’s mental health, specifically from the perspective of healthcare workers. Method: Qualitative and quantitative methods, including systematization, synthesis, analysis, and interviews, were employed in the study. Data were collected through interviews with parents and children, as well as through an analysis of scientific literature and clinical cases. Result: It was f...