If a patient’s blood pressure rises abnormally at night, consider the patient to have a type of hypertension in which nocturnal blood pressure rises predominantly. This pattern of blood pressure fluctuations breaks the normal pattern of blood pressure changes. Normal patients have the two highest blood pressure periods of the day between 6:00 a.m. and 10:00 a.m. and between 4:00 p.m. and 8:00 p.m., while at night, which is the time of night, the patient’s blood pressure is the lowest blood pressure time of the day. If the patient’s blood pressure is predominantly elevated at night, the time of oral administration of antihypertensive drugs can be adjusted appropriately. It is generally recommended to take oral antihypertensive drugs after waking up in the morning, while for patients with high blood pressure at night, antihypertensive drugs can be taken before bedtime. It is also recommended that patients have ambulatory blood pressure monitoring directly to assess the specific point in time when the patient’s blood pressure gradually rises, and take oral antihypertensive drugs half an hour to one hour before the patient’s blood pressure gradually starts to rise, which helps prevent the development of hypertension.