Objective:This paper is to study antihypertensive effect of “Qianyang Decoction” in rats with hypertension by abdominal aortic banding  Methods:Hypertention model was established by abdominal aortic banding,and a sham operation was performed for controls. Wistar rats were randomly divided into sham-operation group and operation group. After the modeling,operation rats were randomly divided into model group,perindopril group,“Qianyang Decoction” group,there were 10 rats in each group. 4 weeks after operation,rats were gavaged for 8 weeks. The blood pressure of rats was determined by measuring left forelimb blood pressure with caudal artery continuous dynamic measurement instrument  Results:①4 weeks after the modeling,compared with the sham-operation group,each group’s systolic blood pressure is significantly increased(P<0.001). There was increased trend in diastolic blood pressure,but there was no statistical difference between each group(P>0.05). ②4 weeks after intervention,compared with the model group,the systolic blood pressure of perindopril group and Qianyang Decoction group both were significantly decreased(P<0.001),while the diastolic blood pressure has no statistical difference between each group(P>0.05). ③8 weeks after intervention,compared with the model group,the systolic blood pressure of perindopril group and Qianyang Decoction group both were significantly decreased(P<0.05),while the diastolic blood pressure has no statistical difference between each group(P>0.05). ④8 weeks after intervention,compared with the sham-operation group,the level of AngⅡof model group was significantly decreased(P<0.001). Compared with the model Group,the level of AngⅡof perindopril group and Qianyang Decoction group are both significantly decreased (P<0.001)  Conclusion:Qianyang Decoction has antihypertension effect in rats with abdominal aortic banding,especially lower systolic pressure,the possible mechanism is by inhibiting AngII levels.