160/90mmHg blood pressure in a 70 year old man needs to be differentiated as an occasional blood pressure value or if it has been so for a long time. If the value is measured three times in a row in the resting state, it belongs to the range of high blood pressure, and it is necessary to take the appropriate amount of antihypertensive drugs (e.g. amlodipine, etc.) under the guidance of a specialized doctor. Antihypertensive drugs can lower blood pressure by inhibiting smooth muscle, acting on the central blood pressure regulation mechanism, and dilating blood vessels. When blood pressure is persistently too high and not effectively controlled, it can be harmful to the heart, brain, kidneys and other organs. Therefore, when blood pressure is too high and does not drop, it is recommended to go to the hospital for treatment. Normal blood pressure is divided into systolic (high pressure) and diastolic (low pressure), the normal range of systolic blood pressure is 90-140mmHg, and the normal range of diastolic blood pressure is 60-90mmHg. When the blood pressure exceeds 140/90mmHg, it is defined as hypertension. The patient’s blood pressure is 160/90mmHg and requires medication. Specific medication should be taken as prescribed by the doctor.