A high blood pressure for the first time may be caused by not being completely calm, but not all people have a high blood pressure for the first time. When measuring blood pressure for the first time, because the measurer is not fully calmed down, and is still in a state of excitement, sympathetic nerve excitement will appear relatively high measurements, and there is often a faster heart rate, if the measurer is emotionally stable and rests quietly for fifteen to thirty minutes before the measurement, the first measurement of the blood pressure will not have a significant increase. As blood pressure fluctuates, the measured values will not be exactly the same. If the measured blood pressure is significantly different from the usual, it is recommended to measure the blood pressure twice more, and take the average of the three measurements as the measured blood pressure, and if there are significant fluctuations, it is recommended to go to the hospital in time for medical treatment.