To observe effect of Buchang Longshengzhi combined with Gastrodin treating cerebral arteriosclerosis vertigo. Methods： Two hundred and ten patients with cerebral arteriosclerosis vertigo were randomly divided into the treatment group (n=110) and control group (n=110).The treatment group gave patients Buchang Longshengzhi combined with gastrodin, and the control group applied Gastrodin. It took 4 weeks as a course of treatment. Clinical curative effect and blood rheology as well as transcranial doppler of patients in both groups were compared. Results： The total effective rate of treatment group was 95.5% and that of the control group was 77%.There was significant difference between the two groups in the total effective rate（P<0.05）. After comparing blood viscosity and plasma viscosity and hematocrit of patients in both groups, it showed significant difference between the two groups（P<0.05）. As for left middle cerebral artery and right middle cerebral artery and basilar artery in transcranial Doppler, there was significant difference between the two groups（P<0.05）.Conclusion： Buchang Longshengzh combined with gastrodin has satisfactory therapeutic effect in treating cerebral arteriosclerosis vertigo.