When a patient with hypertension vomits, it is important to rule out the possibility of a hypertensive emergency. Hypertensive emergencies mainly refer to patients with hypertension under the influence of certain triggering factors, the blood pressure suddenly rises, and the rise is very obvious, often systolic pressure, that is, high pressure will exceed 180 mmHg, or diastolic pressure, that is, low pressure exceeds 120 mmHg, and may be accompanied by progressive target organ damage, such as heart, brain, kidney, fundus and other organs. Once a hypertensive emergency occurs, it is important to rule out the occurrence of hypertensive encephalopathy and a portion of cerebrovascular accidents, which commonly include cerebral hemorrhage subarachnoid hemorrhage, cerebral infarction and other diseases. Therefore, once a patient with hypertension has vomited, he or she must immediately call the emergency number and go to the appropriate hospital for appropriate tests, including head CT and blood-related indicators. Be sure to seek medical attention in a timely manner so as not to delay the condition.