If the diastolic blood pressure is 70 mmHg and the systolic blood pressure is 100 mmHg, this situation is normal and belongs to a relatively standard blood pressure, but in actual clinical practice, if the systolic blood pressure is 100 mmHg, it belongs to a marginal state, we must pay attention to avoid eating or taking food or drugs that affect blood pressure, because slightly affecting blood pressure drugs, it is likely to cause patients to appear Low blood pressure. The normal systolic blood pressure should be less than 120 mmHg and the normal diastolic blood pressure should be less than 80 mmHg. If the patient is a hypertensive person, the oral dose of antihypertensive drugs must be reduced, and if the combination of drugs is being used, one of the antihypertensive drugs should be stopped accordingly, so as not to lower the blood pressure too low, but not to better maintain cerebral perfusion. Be careful to avoid eating or taking foods or drugs that affect blood pressure, taking drugs that slightly affect blood pressure may cause patients to develop low blood pressure. For the elderly group, the blood pressure is low and should be adjusted promptly. In the case of hypertensive patients, certain medications should be stopped accordingly under the guidance of a physician, so as not to lower the blood pressure too low and instead not to better maintain cerebral perfusion.