Abstract:Objective:To discuss clinical efficacy of Yiqi Huoxue Huayu decoction for chronic obstructive pulmonary diseases acute exacerbation(AECOPD). Method: Clinical data of 58 cases with AECOPD treated in our hospital from Jan 2012 to Dec 2013 were retrospectively analyzed. 30 cases of control group received normal treatment, and 28 cases of combination group received normal treatment combined with Yiqi Huoxue Huayu decoction treatment. Symptoms, signs, arterial blood gas analysis, blood rheology results, lung function of two group were compared 10 days after treatment. Result: Clinical signs and symptoms points of two groups were significantly decreased after treatment(P<0.01), and clinical signs and symptoms points of combination group was (3.1±0.7), which was lower than control group(P<0.01). Total efficiency of combination group was 97.5%, which was higher than 69.7% of control group(P<0.01). High shear whole blood viscosity, low shear viscosity of whole blood, plasma viscosity, erythrocyte aggregation index of combination group after treatment were significantly decreased(P<0.01), which were lower than control gorup(P<0.01). Conclusion: Yiqi Huoxue Huayu decoction treatment for AECOPD can improve clinical efficacy.