If a patient develops sudden high blood pressure with dizziness at night, the patient should be kept calm regularly, avoid strenuous exercise and activity, avoid tension and anxiety, and have the patient monitored in a sitting or lying position with blood pressure, heart rate, and pulse rate. If the patient has a sudden increase in blood pressure, a high pressure >180 mmHg or a low pressure >120 mmHg or higher, the patient must be seen by a doctor. Because of the sudden increase in blood pressure accompanied by dizziness, a series of symptoms such as hypertensive encephalopathy and severe hypertensive comorbidity with increased intracranial pressure should be considered. If you have antihypertensive medication at home, you can have the patient take it regularly, and improve head CT, head MRI, ECG and other related tests as soon as possible after arriving at the hospital. If there is a deficit in the function of the corresponding target organ, comprehensive treatment should be actively carried out, and a slow, long-lasting, full systemic antihypertensive treatment should be adopted when lowering blood pressure.