Dizziness and vomiting in the elderly may be caused by hypertension, benign positional vertigo and acute cerebrovascular disease. 1. Hypertension: If the elderly have a history of high blood pressure and fail to pay attention to it, fail to take antihypertensive medication on time, or get angry and anxious when encountering certain things, resulting in elevated blood pressure, leading to a significant increase in the pressure in the cerebral vasculature, which causes dizziness, vomiting, and may be accompanied by headache, nausea and other symptoms. 2. Benign positional vertigo: clinically known as otolithosis, usually due to a sudden change in the position of the head, resulting in otoliths dislodged to the semicircular canals, which may cause dizziness, vomiting, and may be accompanied by ocular nystagmus, visual rotation and other symptoms. 3. Acute cerebrovascular disease: commonly seen in acute cerebral hemorrhage, cerebral infarction and other diseases, due to local cerebral hemorrhage or ischemia, resulting in damage to the cerebral nerves in the area, causing cerebral dysfunction, which may show symptoms of neurological deficit such as dizziness, vomiting, etc., and may be accompanied by unfavorable speech, numbness of the limbs on one side of the body and other symptoms. Dizziness and vomiting in the elderly should seek medical treatment in a timely manner, and after diagnosing the cause of the disease by completing relevant examinations, treatment should be carried out under the guidance of professional doctors.