Recurrent respiratory tract infections in children are a common phenomenon in pediatrics. The causes of recurrent respiratory infections are as follows: 1. It may be related to the child’s low innate immune function and weak constitution, i.e., during the mother’s pregnancy, the fetus may not develop well or have premature birth, resulting in symptoms of congenital endowment deficiency and weak constitution; 2. If the spleen and stomach are damaged, spleen deficiency will lead to lung deficiency, resulting in recurrent respiratory infections; 3. The lack of care refers to the lack of outdoor exercise and the inability of children to increase or decrease their clothing in a timely manner when they encounter changes in weather.