Dizziness is a common symptom, which can be accompanied by nausea, vomiting and eye tremor, etc. It can be divided into peripheral vertigo and central vertigo according to the location of the lesion. 1. Peripheral vertigo is episodic, short in duration and heavy in degree, mostly accompanied by nystagmus, and often with autonomic symptoms such as sweating, nausea, vomiting, pallor, etc. Common diseases include benign episodic positional vertigo, vestibular neuronitis, Meniere’s disease, otitis media, etc. 2. Central vertigo has milder symptoms, lasts longer and can have coarse nystagmus. Common diseases include vertebrobasilar artery insufficiency of blood supply, spinal cord degeneration, olivopontocerebellar atrophy, temporal lobe tumor and other lesions. Non-systemic vertigo, but rarely accompanied by symptoms of autonomic nerves such as nausea and vomiting, can be seen in eye diseases, endocrine diseases, cardiovascular diseases, etc. Therefore, dizziness accompanied by nausea and vomiting is more often considered as peripheral vertigo, but poisoning, hypoglycemia, hypotension, hypertension and other possible life-threatening conditions should be excluded, so consult an otolaryngologist or neurologist for treatment. Therefore, dizziness and nausea should be judged according to the patient’s age of onset, the cause of onset, the passage, the degree of onset and the duration of the disease.