To observe clinical effects of Dachaihu Decoction on bronchial asthma with intermin-gled phlegm and blood stasis syndrome.Methods:A total of 80 cases of patients with bronchial asthma with intermin-gled phlegm and blood stasis syndrome in the outpatient and ward department of respiration in our hospital were randomly divided into 2 groups,with 40 cases in each group.1 patient fell off from control group,so 39 cases were finished in control group,and 40 cases in treatment group.The treatment group was treated with Dachaihu Decoction.The control group was given the conventional Western medical treatment according to conditions.The changes of symptom score,ACT score,pulmonary function,and clinical efficacy were observed.Serum TNF-α and IL-8 concentrations were measured before and after treatment in 2 groups.Results:After treatment,both groups had marked improvements on symptom scores,ACT scores and pulmonary function.Treatment group had more pronounced effects on symptom scores.After treatment,the serum levels of TNF-α and IL-8 in patients were significantly decreased.Conclusion:It is confirmed that Dachaihu Decoction on the treatment asthma is efficacious.The mechanism may be related to the inhibition of inflammatory reaction.