To observe the effects of Maxing Shigan Decoction in the treatment of acute exacerbation of chronic obstructive pulmonary disease (AECOPD) effect.Methods：Two hundred and twelve patients with AECOPD were randomly divided into control group and observation group with 106 cases in each group,the control group was given conventional western medicine treatment,the observation group in the control group based on the combined application of Maxingshigan decoction,1 courses (14 d) related indicators contrast curative effect and TCM syndrome score,lung ventilation function.Results：The clinical control rate of the observation group was 40.57%,which was better than the 24.53% of the control group.The TCM symptom scores of cough,phlegm,wheezing and shortness of breath after treatment in observation group were lower than those of the control group.The FEV 1% value,FEV1/FVC expected around pulmonary ventilation function indexes of treatment difference was higher than that of control group,and the differences were statistically significant (P<0.05).Conclusion：Maxingshigan Decoction in the treatment of AECOPD can heat phlegm,detoxification and remove blood stasis,promote the clinical symptoms,improve lung function,and improve the curative effect.