Abstract： Objective： To observe the clinical effect of the therapy of Buyang Zhixuan Decoction combined with routine western medicine on dizziness due to hypertension of yang deficiency type. Methods：A total of 128 patients with dizziness due to hypertension of yang deficiency type were selected as the study subjects and divided into the control group and the combination group according to the random number table method， with 64 cases in each group. The control group was given Amlodipine Besilate Tablets for treatment，and the combination group was treated with Amlodipine Besilate Tablets combined with Buyang Zhixuan Decoction. The clinical effects， incidence of adverse reactions， dynamic blood pressure，scores of physical (DHIP)，emotional (DHIE) and functional (DHIF) impacts in Dizziness Handicap Inventory (DHI)， systolic peak velocity (VS) and diastolic velocity (VD) of vertebral artery were compared before and after treatment between the two groups. Results： After treatment， the average 24-hour systolic blood pressure (24 hSBP) and 24-hour diastolic blood pressure (24 hDBP) in the two groups were decreased (P＜0.05)，and the 24 hSBP and 24 hDBP in the combination group were lower than those in the control group (P＜0.05). After treatment，the scores of DHIP，DHIE，DHIF in DHI and total score in both groups were decreased (P＜0.05)，and the above scores in the combination group were lower than those in the control group (P＜0.05). After treatment， the values of VS and VD of vertebral artery in both groups were increased (P＜0.05)， and the above values in the combination group were higher than those in the control group (P＜0.05). The total effective rate was 95.31% in the combination group，higher than that of 82.81% in the control group (P＜0.05). There was no significant difference being found in the comparison of incidence of adverse reactions between the two groups (P＞0.05). Conclusion： The therapy of Buyang Zhixuan Decoction combined with routine western medicine for dizziness due to hypertension of yang deficiency type can effectively decrease the blood pressure，and improve the symptoms of dizziness due to hypertension and the hemodynamics with a significant curative effect and good medication safety.