If the blood pressure is low in the morning and high in the afternoon, it is recommended to go to the hospital in time, according to the condition, adjusted under the guidance of the doctor to take antihypertensive drugs at noon every day. Antihypertensive drugs should be selected long-acting slow-release preparations, once a day, in addition to pay attention to changing bad habits. For normal blood pressure, there are two peaks, 6 am to 8 am and 4 pm to 6 pm. For hypertensive patients, if they take high blood pressure medication in the morning, the blood pressure in the morning and the morning blood pressure can be kept stable, but the elevated blood pressure in the afternoon is often difficult to control, this is because antihypertensive drugs are not long-acting drugs, it is recommended to take 24-hour long-acting antihypertensive medication to lower the blood pressure smoothly, such as amlodipine, enalapril, and Irbesartan Hydrochlorothiazide tablets. In addition, for patients who do not have significantly high blood pressure in the morning, it is appropriate to delay taking antihypertensive drugs to noon or afternoon, so that the efficacy of patients with high blood pressure in the afternoon and evening blood pressure is better. At the same time, pay attention to changing bad habits, low-salt and light diet, pay attention to rest, maintain a calm mind, avoid strenuous exercise, quit smoking and limit alcohol.