To explore the clinical effect of supplemented Banxia Xiexin Decoction in the treatment of gastroesophageal reflux correlation bronchial asthma. Methods: Sixty-four gastroesophageal reflux correlation bronchial asthma patients treated in our department of Cough asthma clinic from July 2008 to October 2012 were divided into two groups according to the drugs used for the treatment. Patients in treatment group (n=32) were treated with Banxia Xiexin Decoction combined with conventional western medicine; the patients in control group(n=32) were given Shegon Mahuang Decoction combined with conventional western medicine. The two groups were compared before and after treatment in terms of the bronchial asthma score and GERD score. Results: There were significant differences in bronchial asthma score and GERD score before and after the treatment in both groups (P<0.05); after the treatment, there were significant differences in bronchial asthma score between the two groups (P<0.05); GERD symptom score showed significant differences before and after treatment in the treatment group (P<0.05); there were no statistical differences before and after the treatment in the GERD symptom score in control group (P>0.05).Conclusion: Supplemented Banxia Xiexin Decoction shows satisfactory effect in treating gastroesophageal reflux correlation bronchial asthma.