摘要Objective: To investigate the effect of Bushen Hemai Decoction on the wall stiffness of middle-aged and elderly patients with isolated systolic hypertension. Methods: A total of 126 patients with middle and old systolic hypertension were selected from March 2017 to March 2018 in our hospital. According to the random table method, there were 63 cases in the observation group and 63 cases in the control group. The control group was treated with conventional western medicine, while the observation group was treated with kidney tonifying and pulse prescription hypothyroidism on the basis of the control group. The two groups were treated for 12 weeks. The changes of blood pressure, pulse conduction velocity and endothelium-dependent vasodilation function were compared between the two groups before and after treatment. Results: the systolic pressure in the two groups was lower than that before the treatment, but the diastolic pressure was not significantly changed, and the systolic pressure in the observation group was lower than that of the control group, while the diastolic pressure was not statistically significant. After treatment, the pulse conduction velocity of the two groups was lower than that before the treatment, and the pulse conduction velocity of the observation group was lower than that of the control group after treatment. After two groups of treatment, FMD was higher than before treatment, but there was no significant change in the diameter of vascular base, and FMD in the observation group was higher than that of the control group, but there was no statistical difference between the blood vessel base diameter. The total effective rate of the observation group (93.65%) was higher than that of the control group (74.60%). Conclusion: Bushen Hemai Decoction is effective in treating isolated systolic hypertension in middle-aged and old patients, and can reduce the stiffness of patients' tube wall, which is worthy of clinical reference.