The spectrum of the links between the quality of life and health has been expanding due to the phenomenon of health acquiring features of a social phenomenon and growing complexity. The research evidenced that health was considered to be one of the most important, and often the most important, dimension of the quality of life. To more comprehensively identify the health-related factors that affected the quality of life in general, the concept of the health-related quality of life has been developed. In our research 1763 children filled KIDSCREEN52 surveys which evidence tendency as follows: even though two thirds of the children did not indicate they had health disorders, only one third of them assessed their health as excellent and very good. This demonstrates that, in the children’s assessment of health, both the absence of a disease or disability and also psychological and social factors are important.