Objective:To observe the intervention effects of Yiqi Huayu Recipe on the hypercoagulability in patients after hip arthroplasty. Methods 60 patients after hip arthroplasty were randomly divided into the treatment group and control group,30 cases in each group. The control group was treated with low molecular weight heparin,and the treatment group was treated with Yiqi Huayu Recipe based on the treatment for the control group,with a course of 7 days. The D-dimer(D-D),fibrin degradation product (FDP),prothrombin time(PT) and partial thromboplastin time(APTT) were observed and compared.  Results: ①The levels of D-D and FDP on 7th day after operation were both significantly decreased in the two groups compared with 1st day after operation,with statistically significant differences(P<0.05). For the comparison between operation before and 7th day after operation within group,the differences on the levels of D-D and FDP were not statistically significant(P>0.05). On 7th day after operation,the decrease of D-D and FDP levels in the treatment were more significant than those in the control group(P<0.05). ②For the comparison between operation before and 1st and 7th day after operation within group,the differences on the PT and APTT were not statistically significant(P>0.05). For the comparison between groups on 7th day after operation,the differences on the PT and APTT were not statistically significant(P>0.05).  Conclusion: Yiqi Huayu Recipe can significantly improve the hypercoagulability in patients after hip arthroplasty,and prevent deep vein thrombosis with slight side effect.