In general, normal blood pressure for a 45 year old human should be between 90-139 mmHg systolic and 60-89 mmHg diastolic to be considered normal. The normal range of blood pressure is the same for all adults and does not discriminate between men and women or age groups. In the normal blood pressure range, it can be further divided, if the high pressure between 120-139mmHg, low pressure between 80-89mmHg, for the normal high value, that is, the blood pressure range is normal but a little high, need to more closely monitor blood pressure, and good lifestyle maintenance, to prevent further increase in blood pressure, the development of high blood pressure. In addition, if the blood pressure is between 90-120mmHg for high pressure and 60-80mmHg for low pressure, the blood pressure value within this range is normal blood pressure under ideal condition. In addition, it is recommended that 45-year-old patients with high or low blood pressure should go to the hospital in time and be treated according to the doctor’s instructions to avoid delaying their condition.