Objective To observe the effect of Jiangya Powder （Powder for lowering blood pressure） in the treatment of hypertension.Methods The 300 enrolled patients were randomly divided into the treatment group （153 cases treated by Jiangya Powder） and the control group （147 cases treated by Captopril）. Blood pressure

blood lipid

hemorheology

renal and liver functions and main symptoms and signs in both groups were observed before and after treatment.Results In both groups

the systolic pressure and diastolic pressure were both lowered （P<0.05）

the difference between both groups after treatment was significant

and the decrease of blood pressure in the treatment group was more obvious than that of the control group （P<0.05）.The improvement of the treatment group in blood pressure

blood lipid

hemorheology and relieving the main symptoms was both superior to those of the control group

and the difference was significant （P<0.05）. There was no any side-reactions found in the duration of treatment.Conclusion Jangya Powder is a safe and effective drug for hypertension.