Objective To investigate the effect of oral Chinese medicine on prognosis of cough variant asth -ma (CVA).Methods 90 cases diagnosed as CVA patients were randomly divided into 2 groups.46 patients in the treatment group were treated by traditional Chinese medicine decoction ( Chen control varying Kechuan party ) oral;Control group ( n =44 ) received conventional western medicine therapy .The therapeutic course was four weeks in two groups .After the treatment improvements in lung function , negative conversion ratio of bronchial provocation test (BPT) and status to a typical asthma were observed follow -up for 3 months.Results CVA remission in treatment group was significantly better than that in the control group (P<0.05).Developed into a typical asthma proportion in the treatment group was significantly lower than that in the control group (P<0.05).Negative conversion ratio of BPT in treatment group was higher than that in control group (P<0.05).Conclusion Chen control varying kech-uan partg can decrease the incidence of typical asthma , reduce airway hyperresponsiveness trend , can improve the prognosis of patients with CVA .%目的：研究口服中药对咳嗽变异性哮喘（ CVA）预后的影响。方法将90例CVA患者随机分为2组，治疗组46例予中药汤剂陈氏控变咳喘方口服，对照组44例予常规西药治疗。2组共治疗4周，疗程结束后观察2组患者肺功能改善情况、支气管激发试验（ BPT）转阴率，追踪随访3个月统计转为典型哮喘情况。结果治疗组CVA缓解情况明显优于对照组（P＜0．05），治疗组BPT转阴率高于对照组（P＜0．05），治疗组发展成典型哮喘比例明显低于对照组（P＜0．05）。结论陈氏控变咳喘方有降低典型哮喘发生率、降低气道高反应性的趋势，可以改善CVA患者的预后。
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