The normal range of blood pressure for 68 year olds, 90mmHg ≤ systolic blood pressure <140mmHg, 60mmHg ≤ diastolic blood pressure <90mmHg. The normal range of blood pressure of 68 year olds is the same as that of normal adults, and if the systolic blood pressure is more than 140mmHg or diastolic blood pressure is more than 90mmHg, or both of them are higher than the normal standard at the same time, then it suggests that there is high blood pressure. In some cases, the systolic blood pressure can be relaxed to 150mmHg because the blood supply to the cardiovascular vessels is insufficient, and if the blood pressure is too low, it may lead to insufficient perfusion and cause diseases. Elderly people usually have a higher chance of developing high blood pressure, so it is recommended to maintain good living habits as well as dietary habits in daily life, adopt a low-salt and low-fat diet to prevent the occurrence of the disease. If elevated blood pressure is detected, consult a doctor promptly to avoid delaying the condition.