Abstract： Objective： To observe the clinical effect of Buyang Huanwu Tang on ischemic stroke patients of qi deficiency and blood stasis type. Methods：A total of 80 patients with ischemic stroke were randomly divided into the control group and the treatment group，with 40 cases in each group. The control group was given conventional treatment， and the treatment group was additionally treated with Buyang Huanwu Tang based on the treatment of the control group. The scores of the National Institutes of Health Stroke Scale(NIHSS) and Neurological Deficit Scale(NDS)，and the levels of whole blood high-shear viscosity， low- shear viscosity，plasma viscosity，platelet aggregation rate and fibrinogen were compared between the two groups before and after treatment. Results： When compared with those before treatment， the scores of NIHSS and NDS in the two groups were decreased after treatment(P＜0.05)； when compared with those in the control group after treatment，the scores of NIHSS and NDS in the treatment group were low after treatment(P＜0.05). When compared with those before treatment，the levels of whole blood lowshear viscosity， high-shear viscosity ， plasma viscosity， platelet aggregation rate and fibrinogen were decreased in the two groups after treatment(P＜0.05)； when compared with those in the control group after treatment， the levels of the above hemorheological indexes in the treatment group were low after treatment(P＜0.05). Conclusion： The therapy of Buyang Huanwu Tang combined with conventional treatment has significant effect in improving neurological deficits and cerebral blood perfusion in ischemic stroke patients of qi deficiency and blood stasis type.