Blood pressure can be measured with a mercury column sphygmomanometer, electronic sphygmomanometer or ambulatory blood pressure monitoring. 1, mercury column sphygmomanometer 1, 15min before measuring blood pressure, no smoking or tea, coffee, sit back for 5min; 2, using a standard table-top mercury column sphygmomanometer calibrated to measure the right arm sitting blood pressure, systolic blood pressure reading to take the first tone of Koch’s tone, diastolic blood pressure reading to take the fifth tone of Koch’s tone; 3, continuous measurement of blood pressure 3 times, each measurement interval 1-2min, take its average value. Second, electronic blood pressure monitor patients can measure themselves, more convenient. Third, ambulatory blood pressure can understand the blood pressure situation of a day.