Objective：To observe the effect of Buyang Huanwu tang on hypercoagulable state in patients with lung cancer of qi deficiency and blood stasis type.Methods：Divided 60 cases of patients with lung cancer of qi deficiency and blood stasis type randomly，30 cases in each group.The control group receivedconventional nutritional support treatment，while the treatment group was additionally given Buyang Huanwu tang based on the treatment of the control group.Compared changes of related indexes of hypercoagulable state in two groups before and after treatment，including D-dimer，fibrinogen(FIB)， blood platelet count(BPC)， tissue-type plasminogen activator(tPA)and plasminogen activator inhibitor-1(PAI-1).Results：The comparisons of FIB， D-dimer， BPC， tPA and PAI-1 in the treatment group on the 7th、 14th、28thday of treatment and before treatment showed significance in differences(P＜0.05).Besides，the respective comparisons of the above indexes between the two groups showed significance in differences(P＜0.05).Conclusion：Buyang Huanwu tang can improve the hypercoagulable state in patients with lung cancer of qi deficiency and blood stasis type.