Objective To observe the type and degree of vertigo clinical study of Posterior Circulation Ischemia Vertigo syndrome. Methods Select 150 cases from Kaifeng City outpatient department of encephalopathy hospital emergency treatment and hospitalization in patients with posterior circulation ischemic vertigo as the research object， observe the clinical syndromes of the TCM syndrome differentiation type of TCM score and the degree of vertigo. Results Liver fire syndrome type proportion accounted for 28%， and symptom scores syndrome average respectively（9.53±2.12）； were significantly higher in the proportion of other syndromes and syndrome score， the differences were statistically significant（P<0.05）. Inflammatory score the highest on the anger（15.4±5.7）， kidney essence deficiency score the lowest score（12.8±4.7）， the difference was statistically significant（P<0.05）. Conclusion TCM clinical hyperpyrexia of liver syndrome ischemic vertigo cycle in percentage and syndrome type of the highest rated， vertigo symptom and degree of each syndrome type are different， should the syndrome differentiation and treatment in clinical treatment.