Objective: To observe therapeutic effect of Naomaitong Capsules on cerebral thrombosis and to study the mechanism. Methods: 160 cases of thrombosis were randomly divided into a treatment group（n=86） and a control group（n=74）

and they were treated by Naomaitong Capsules and LuoXinTong

respectively. After treatment for 3 months therapeutic effects were investigated. Results: The cured and markedly effective rate was 81.39% and the total effective rate was 95.35% in the treatment group with significant differences as compared with those in the control group （P<0.05 or P<0.01）; After treatment

there were significant differences between the two groups in blood lipids and hemorheologic results（P<0.01）. Conclusion: Naomaitong has a good therapeutic effect on cerebral thrombosis

and can decrease total cholesterol

low density and very low density lipoprotein cholesterol and triglyceride contents and increase high density lipoprotein cholesterol content

and improve hemorheologic indexes and blood viscosity.