Normal blood pressure at age 70 should be in the range of 90 to 139 mmHg systolic and 60 to 89 mmHg diastolic. The normal range of blood pressure is independent of age. Although blood pressure increases slightly with age due to hardening of blood vessel walls, it should still be within the normal blood pressure range. At the age of 70 years blood pressure 90~139/60~89mmHg is the normal blood pressure value range, which can be further divided into normal blood pressure and normal high value blood pressure. Within the range of normal blood pressure, systolic blood pressure <120mmHg and diastolic blood pressure <80mmHg is normal blood pressure, systolic blood pressure ≥120mmHg and/or diastolic blood pressure ≥80mmHg is normal high-value blood pressure, and the latter has an increased likelihood of developing into hypertension. Systolic blood pressure <90mmHg and diastolic blood pressure <60mmHg are considered low blood pressure values; systolic blood pressure ≥140mmHg and/or diastolic blood pressure ≥90mmHg measured in the office on three occasions not on the same day can be diagnosed as high blood pressure, and also refer to the range of self-measurement of the home blood pressure, systolic blood pressure ≥135mmHg and/or diastolic blood pressure ≥85mmHg is considered high blood pressure, and the range of normal blood pressure should be adjusted to systolic blood pressure between The normal blood pressure range should be adjusted to a systolic blood pressure of 90~135mmHg and a diastolic blood pressure of 60~85mmHg. Elderly people aged 70 years are prone to hypertension and systolic hypertension, etc. It is recommended that they have their blood pressure checked on a regular basis, and should consult a doctor if there is any abnormality in their blood pressure.