There is no specific standard for the blood pressure of 80 year olds, the standard of judgment is the same as the standard of adults, as long as the systolic blood pressure does not exceed 140mmHg, not less than 90mmHg, diastolic blood pressure does not exceed 90mmHg, not less than 60mmHg, it belongs to the normal blood pressure range. Due to the poor vascular elasticity of the elderly, they are prone to senile hypertension, which is mainly manifested by elevated systolic blood pressure. It is acceptable for the elderly to have a slightly high systolic blood pressure, which does not exceed 140mmHg. The elderly must pay attention to monitoring blood pressure, especially patients with heart disease, cerebrovascular disease and other underlying diseases, it is easy to lead to changes in the condition because of changes in blood pressure, usually pay attention to maintain a relaxed mood, avoid mood swings, in the diet pay attention to light, low salt, low-fat diet.