To observe the effects of Buyang Huanwu decoction on blood hypercoagulability in patients with acute cerebral infarction of qi deficiency and blood stasis syndrome.Methods:A total of 60 cases of acute cerebral infarction patients were included in the study,then randomly divided into control group (30 cases) and observation group (30 cases).The control group received conventional western medicine treatment of neurology,and the observation group with Buyang Huanwu decoction based on western medicine.Take 4 weeks for a course of treatment.At the end of the treatment,FMA score,thrombus elasticity index and the concentration of P-selectin in peripheral blood were compared between the two groups.Results:Buyang Huanwu decoction could significantly improve the exercise capacity of patients with acute cerebral infarction,while prolonge the R and K values,reduce α angle,MA and CI values,and inhibit the level of P-selectin in peripheral blood.Conclusion:Buyang Huanwu decoction can improve the blood pressure hyper coagulability of patients with acute cerebral infarction of qi deficiency and blood stasis syndrome,which may be one of the possible mechanisms.