Abstract
Children's health is characterized by a decrease in the resistance and sensitivity of the environment to harmful chemical effects. The body and organs of children are closely related to the causes of the external environment and affect all their functions physical and chemical causes of the external environment. Many scientists who deal with population urbanization and environmental and hygienic conditions believe that studying the relationship between environmental causes and children's health is very important.
The purpose of the study: to improve the organization of preventive medical measures aimed at reducing the level of morbidity and indicators of children under 6 years of age.
Materials and methods studied. Official medical statistics and service reports of polyclinic organizations of the Turkestan regional health Department for 2016-2018 were obtained. The unit of the study was taken health indicators of children aged 0 to 6 years with the detection of chronic diseases in an outpatient clinic. Research bases are urban outpatient organizations.
Results. The level of chronic diseases of children registered in polyclinic organizations is estimated by correlation examination in connection with different degrees of risk formation, depending on social and environmental conditions.
Conclusion. The influence of environmental and hygienic risk factors on children's health has been proved in the course of the study.

Key words: preschool children, health indicators, environmental and hygienic reasons, harmful factors