The duration of antihypertensive medication generally depends on the patient’s blood pressure fluctuation pattern and the type of antihypertensive medication taken. 1. Spoon shaped blood pressure: Most patients’ 24-hour blood pressure fluctuations are spoon shaped, i.e., there is a blood pressure peak from 6 a.m. to 10 a.m., and then there is a peak from 3 p.m. to 6 p.m. If patients are taking long acting slow release drugs or controlled release preparations, they need to take antihypertensive drugs before the first peak. If the patient is taking long-acting extended-release drugs or controlled-release preparations, he or she needs to take antihypertensive drugs before the first blood pressure peak, and it is generally recommended to take antihypertensive drugs after waking up in the morning. 2. Other types of blood pressure: also known as non-spoon type or anti-scoop type, meaning that the patient’s peak blood pressure is not the morning and afternoon two time periods, some patients may be high blood pressure at night, it is recommended that the peak of blood pressure 1 ~ 2 hours before the arrival of the medication, if it is a long-acting antihypertensive medication, generally taken once a day; short-acting antihypertensive medication generally need 2 ~ 3 times each time. In addition, the above drugs need to be taken under the guidance of a specialist, patients must not take without authorization.