Objective To investigate the efficacy and mechanism of Sanxuemingmu tablets and compound Xueshuantong capsule in treatment of RVO patients with qi stagnation and blood stasis syndrome.Methods 1200 cases of RVO patients with qi stagnation and blood stasis syndrome from April 2014 to April 2016 months in our hospital were selected,and randomly divided into two groups,600 cases in each group.The observation group was treated with Sanxuemingmu tablets,the control group were treated with compound Xueshuantong capsule,the curative effect and relative score of the two groups were compared.Results After treatment,the visual acuity of the two groups was significantly higher than that before treatment,the visual acuity of the observation group was higher than control group (P<0.05);The absorption of fundus hemorrhage in the observation group was significantly better than that in the control group(P<0.05);The total effective rate of FFA in observation group was significantly higher than that in control group (P<0.05);Compared with before treatment,the whole blood viscosity and plasma viscosity of the two groups were decreased,and the whole blood viscosity and plasma viscosity of the observation group were lower than those of the control group(P<0.05);The TCM syndrome scores of both groups were lower than those before treatment,and the observation group was significantly lower than the control group( P <0.05);The total effective rate and the total effective rate of the treatment group were significantly higher in the observation group than in the control group(P<0.05).Conclusion Sanxuemingmu tablets has significant clinical effect in treatment of RVO patients with qi stagnation and blood stasis syndrome,can accelerate the absorption of retinal hemorrhage,treatment of retinal vein obstruction qi stagnation of blood stasis,promote vision recovery and improve treatment efficiency.