目的:观察序贯疗法在小儿下呼吸道感染中的治疗效果。方法:对纳入观察的患儿随机分为治疗组和对照组。治疗组在静脉滴注抗生素3～7天后改为口服相应抗生素,对照组静脉滴注抗生素7～14天,比较两种治疗方法的临床效果。结果:治疗组在患儿症状的消失及住院天数上均与对照组差异有显著性,具可比性。结论:序贯疗法可以减少住院天数,节约费用,还可减少院内交叉感染。 Objective: To observe the effect of sequential therapy in children with lower respiratory tract infection. Methods: The included children were randomly divided into treatment group and control group. The treatment group was changed to oral antibiotics 3 to 7 days after intravenous infusion of antibiotics, while the control group was given antibiotics 7 to 14 days intravenously. The clinical effects of the two treatment methods were compared. Results: There was significant difference between the treatment group and the control group in the disappearance of symptoms and days of hospitalization, comparable. Conclusion: Sequential therapy can reduce the length of hospital stay, save costs, but also reduce the hospital cross-infection.