1. Episodes of rotational vertigo 2 or more times, each lasting from 20min to several hours. It is often accompanied by autonomic dysfunction and balance disorder. There is no impairment of consciousness. 2. Fluctuating hearing loss, mostly low-frequency hearing loss in the early stage, with progressive hearing loss gradually aggravated. At least 1 pure tone audiometry for sensorineural hearing loss, can appear auditory resonance phenomenon. 3. With tinnitus and/or ear fullness. 4. Exclude vertigo caused by other diseases, such as benign paroxysmal positional vertigo, vaginitis, vestibular neuronitis, drug-induced vertigo, sudden deafness, inadequate blood supply to the vertebral basilar artery, and intracranial occupying lesions. Suspicious diagnosis of Ménière’s disease (Ménière’s disease pending): 1. Only one episode of vertigo with pure tone audiometry of sensorineural hearing loss with tinnitus and a feeling of ear fullness. 2. 2 or more episodes of vertigo, each lasting 20 min to several hours. Hearing is normal without tinnitus and fullness. 3. Fluctuating low-frequency sensorineural hearing loss. The phenomenon of reverberation may occur. No obvious vertigo attacks. Any of the above is a suspicious diagnosis. Further glycerol test, cochlea electrogram, otoacoustic emission and vestibular function examination can be performed for those with suspicious diagnosis according to the conditions.