Objective: To analyze the composition principles of Chinese patent medicine for treating vertigo in Chinese Pharmacopeia (2015 edition

volume I) and the People's Republic of Chinese Ministry of Public Health-Chinese Patent Preparations (Chinese Patent Preparations for short). Method: Through Traditional Chinese Medicine Inheritance Support System (TCMISS

V2.5)

Chinese patent medicines for treating vertigo set forth in Chinese Pharmacopeia and Chinese Patent Preparation were selected

their information was entered to build a database. The frequently used syndromes and drugs

combination principles and new Chinese prescriptions for vertigo were analyzed. Result: By analyzing 329 Chinese patent medicines for treating vertigo

vertigo could be classified into excess syndrome and deficiency syndrome. ① The vertigo of excess syndrome totally involved 147 Chinese patent medicines

the main syndromes were liver-Yang hyperactivity and obstruction of collaterals by blood stasis; The pathogenesis included wind

fire

phlegm and blood stasis. The drugs were dominated by heat-clearing drugs

blood-activating drugs and calming-liver and suppressing liver-yang drugs. The main drug combinations were Scutellariae Radix

Coptidis Rhizoma

Phellodendri Chinensis Cortex

Gardeniae Fructus; Pinellia Rhizoma

Citri Reticulatae Pericarpium

Poria

Glycyrrhizae Radix et Rhizoma

Atractylodis Macrocephalae Rhizoma and Gastrodiae Rhizoma

Chuanxiong Rhizoma

Salviae Miltiorrhizae Radix et Rhizoma

Puerariae Radix. Five new prescriptions for excess syndrome were obtained: wind-dispelling prescription

wind-calming prescription

fire-purging prescription

phlegm-eliminating prescription and blood-activating prescription. ②The vertigo of deficiency syndrome totally involved 182 Chinese patent medicines

the main syndromes were deficiency of Qi and blood and deficiency of liver and kidney

the drugs were based on kidney-reinforcing drugs

blood-tonifying drugs and Qi-invigorating drugs

the main combinations were Rehmanniae Radix Praeparata，Dioscoreae Rhizoma，Poria，Lycii Fructus，Schisandrae Chinensis Fructus；Ginseng Radix et Rhizoma，Ophiopogonis Radix，Schisandrae Chinensis Fructus，Poria and Angelicae Sinensis Radix，Astragali Radix，Atractylodis Macrocephalae Rhizoma，Dioscoreae Rhizoma，and got 3 new prescriptions according to deficiency syndrome 's pathogenesis: reinforcing kidney prescription

nourishing liver and kidney prescription

reinforcing Qi and blood prescription. Conclusion: The pathogenesis of vertigo was complex

including wind

fire

phlegm

blood stasis and deficiency. We should pay attention to all of them in the treatment

determine etiologic factors based on differentiation

give consideration to both excess and deficiency

and treat both the symptoms and the causes of disease

in order to improve the clinical efficacy.