Objective: To explore the clinical effect of Linggui Shugan Decoction combined with electroacupuncture at Fengchi Xuegui on the treatment of vertebrobasilar arterial insufficiency (VBI) vertigo. Methods: A total of 145 patients with VBI vertigo admitted to our hospital from November 2017 to August 2019 were selected as the research objects, and they were divided into a combination group (75 cases) and a control group (70 cases) using a random number table method. Under the premise of basic treatment, the combined group was treated with Lingguizhugan Decoction combined with electroacupuncture at Fengchi's blood supply points, and the control group was treated with Sibelin. The clinical efficacy, dizziness improvement, cerebral arterial blood flow velocity index, arteriosclerosis index (AI) and blood rheology index were compared between the two groups. Results: After treatment, the total effective rate of the combined group was 89.33%, which was higher than 75.71% of the control group (P<0.05); after treatment, the combined group's vertigo symptom score, European Vertigo Rating Scale (EEV) score and vertigo disorder scale (DHI) ) Score was lower than that of the control group (P<0.05); the left artery, basilar artery peak velocity (Vp), left and right lateral arteries, and basilar artery average blood flow velocity (Vm) after treatment in the combined group were all higher than those of the control group., Basilar artery pulsatility index (PI), right arterial resistance index (RI), AI, high-cut whole blood viscosity, mid-cut whole blood viscosity, low-cut whole blood viscosity, plasma viscosity, and hematocrit are all lower than the control Group (P<0.05). Conclusion: Linggui Zhugan Decoction combined with electro-acupuncture at Fengchi supplying blood points in the treatment of VBI vertigo can alleviate the patient's vertigo, with definite curative effect, improving cerebral arterial blood flow velocity and cerebral arteriosclerosis, and reducing blood viscosity. [ABSTRACT FROM AUTHOR]