The paper presents the results of an ecological and hygienic assessment of the prevalence of circulatory system diseases in the adults and adolescents of the Primorye Territory. In the past 3 years, circulatory system diseases have first held the lead in the structure of total morbidity and accounted for 43-4996. The spread of circulatory diseases among the adult and adolescent population in the region depends on the bioclimatic zone, environmental tension, and environmental factors.