For the reading of the blood pressure monitor must be decided according to the type of blood pressure monitor, if it is an electronic blood pressure monitor, is to measure the blood pressure after the observation of the value can be. Mercury column sphygmomanometer is to be decided in the state of auscultation, systolic pressure is to hear the first heartbeat sound is the main, diastolic pressure is the last time to hear the heartbeat sound value for the low pressure state. After measuring the value of the sphygmomanometer, if the blood pressure is below 120/80 mmHg, it belongs to normal blood pressure, if the blood pressure is above 140/90 mmHg, it belongs to hypertension, and in between, it belongs to the high state of normal blood pressure, which must be read according to the range of values and the specific type of sphygmomanometer.