呼吸道感染在小儿疾病中最为常见，约占门诊病例的70％，而反复呼吸道感染者占3O％，这些患儿因其反复发作严重影响患儿的生长发育，危害了小儿的身心健康。在临床工作中，我们体会到提高小儿的免疫功能可以降低反复呼吸道感染的复发率。我们对引例反复呼吸道感染（RRI）患儿采 Respiratory tract infection is most common in pediatric diseases, accounting for about 70% of outpatient cases, and repeated respiratory infections accounted for 30% of these children because of repeated attacks seriously affect the growth and development of children, endanger the physical and mental health of children. In clinical work, we realized that improving children’s immune function can reduce the recurrence rate of recurrent respiratory infections. We recruited children with RRI