The first point is caused by demyelinating diseases of the central nervous system, which may be caused by demyelinating diseases of the central nervous system, which is also common in neurology. For example, neuromyelitis optica can affect the brain stem, patients may have clinical manifestations of dizziness and vomiting, and may also have symptoms such as nystagmus and ataxia. It is necessary to improve the brain MRI examination, The detection of aquaporin antibodies needs to be improved to further clarify the diagnosis. 2. Cerebrovascular disease can also lead to dizziness and vomiting. For example, cerebellar hemorrhage can lead to such symptoms and headache. In addition, if the patient has otolith, vestibular migraine, vestibular neuritis, it can also cause dizziness and vomiting.