Dizziness is a symptom that, if it persists, is likely to be a precursor to a variety of diseases, the more common of which are cerebrovascular diseases, such as cerebellar brainstem hemorrhage or infarction in patients. 1. When dizziness occurs in cerebral infarction, it is often not accompanied by deafness, tinnitus and visual rotation, but can be accompanied by nausea, vomiting, nystagmus and neurological deficits. 2. When dizziness occurs in brain tumor patients, the patient may also have somatic motor, sensory and other dysfunction. 3. Patients with Meniere’s syndrome, otoliths, vaginitis and vestibular neuronitis may first experience dizziness, often accompanied by deafness, tinnitus and visual rotation. 4, cerebellar lesions, dysfunction of the vegetative nerves, hypertension, coronary artery disease, cerebral arteriosclerosis, anemia, functional hypoglycemia, cervical spondylosis, depression, etc., may also present with dizziness. 5. Short-term dizziness may occur due to common cold or due to lack of sleep and rest, etc. Dizziness is a common functional disorder of the brain, suggesting that it is a precursor of brain disease, but it may also be some systemic diseases.