Electronic sphygmomanometers to measure blood pressure is more accurate, but patients need to master certain skills or principles. Electronic sphygmomanometers should be used from regular manufacturers, and attention should be paid to regular correction of the electronic sphygmomanometer. At the same time, the patient should rest for more than 5-10 minutes before measuring blood pressure. Before measuring blood pressure, do not overly strenuous activity, loud noise or contraction of arm muscles, etc. In the process of measuring blood pressure, the patient should also calm down and not overly nervous. When measuring blood pressure, the patient can choose a sitting or lying position, and the position of the cuff should be at the same level as the position of the heart. When measuring blood pressure, the result of one blood pressure should not be taken as the basis, but three times at the same time, and the average value should be taken as the normal value of blood pressure.