Abstract: Objective: To investigate the incidence rates of nutritional risk and malnutrition of critical children,and provide the basis for clinical nutrition support.Methods: The nutrition risks in 284 critical children during hospitalization were screened by STRONG kids,and the nutrition status of children were evaluated by physical examination.Results: The detection rate of nutrition risk in critical children during hospitalization was 52.82%,and the detection rates of malnutrition of all critical children at the beginning and end of hospitalization were 19.01% and 33.80%,respectively.The nutrition risk was positive correlation with malnutrition(P< 0.01).The hospitalization duration was positive correlation with the detection rates of nutrition risk and malnutrition(P< 0.05).Conclusions: The incidence of acute malnutrition and detection rates of nutrition risk and malnutrition in critical children with unideal nutrition support during hospitalization are high,and the hospitalization duration is long.