Abstract: Objective To observe the clinical efficacy of Xingsu powder with modification in the treatment of acute cough of recurrent respiratory tract infections(RRTIs) with external evil inducing phlegm and fluid retention.Methods Fracute cough of RRTIs with external evil inducing phlegm and fluid retention were treated in the pediatric outpatient department of the Second Affiliated Hospital of Jiangxi University of TCM,and they were selected and randomly divided into a control group and an observation group,with 54 cases in each group.The control group was given symptomatic treatment with ambroxol oral solution and inhalation of budesonide solution,and on this basis,the observation group was given Xingsu powder with modification.After 6 days of the above treatment,the clinical efficacy,clinical symptom score,adverse reaction and secondary chronic cough of the two groups were compared.Results After treatment,the total clinical efficiency rate of observation group was 96.30%(52/54),higher than that of control group(83.33%,45/54),and the clinical symptom score was significantly reduced compared with that of control group,the difference bring statistically significant(P<0.05);during the treatment,there was no statistical difference in the incidence of adverse reactions between the two groups(P>0.05);the 4-week follow-up showed that the rate of secondary chronic cough in observation group was 11.11%(6/54),lower than that in control group(25.93%,14/54)(P<0.05).Conclusion Xingsu powder with modification can improve the clinical effect,improve symptoms and reduce the rate of secondary chronic cough in children with acute cough of recurrent respiratory tract infections,which is worthy of clinical promotion.om November 2019 to November 2022,108 cases of 

Key words:

Recurrent respiratory tract infections；Chronic cough, Xingsu powder, Secondary incidence, Children