A survey of 182 children aged 5 to 9 years in the children’s sanatorium «Duslyk» Ufa. A survey of 182 children aged 5 to 9 years in the children’s sanatorium «Duslyk» Ufa.The main group included 101 children with relapsing respiratory pathology, the control group 81 healthy children. The article presents an analysis of the actual weekly diet of children at home, modern approaches to the study of nutritional status using clinical, biochemical, anthropometric, somatometric methods, bioimpedance measurements. The actual nutrition of children with relapsing respiratory pathology was characterized by an imbalance in the content of the main nutrients. A comprehensive assessment of nutritional status revealed malnutrition in children of the main group. The aim of the study was to assess the actual nutrition, the study of nutritional status, taking into account the clinical and laboratory parameters and the component composition of the body of children in the children’s sanatorium. The inclusion of an assessment of actual nutrition and nutritional status in the survey program will make it possible to timely identify malnutrition in children with relapsing respiratory pathology, purposefully carry out preventive measures.