Antihypertensive drugs are generally appropriate to be taken in the morning after waking up to avoid an early peak in blood pressure. Some patients need to take antihypertensive drugs in the afternoon or evening to avoid elevated blood pressure at night. Hypertension is defined as high blood pressure if the systolic blood pressure reaches or exceeds 140 mmHg and the diastolic blood pressure reaches or exceeds 90 mmHg, which can cause multi-organ damage. Taking antihypertensive drugs is the main method of treating hypertension, and the time of taking antihypertensive drugs can be adjusted appropriately according to the time of peak hypertension. The morning peak of blood pressure is generally in the morning 06:00-10:00, such patients should take antihypertensive drugs in the morning after waking up, and the peak of blood pressure in some patients appears in the afternoon 16:00-20:00, and drugs should be taken before this time to control blood pressure. It is generally not recommended to take antihypertensive drugs before bedtime to avoid the danger of hypotension at night. In addition, in addition to medication, patients with hypertension should also pay attention to a low-salt diet, control blood lipids, and moderate physical exercise.