Electronic sphygmomanometer due to its own relatively simple operation widely accepted by people, but because of the electronic sphygmomanometer manufacturer many of its product quality mixed, so the detection of blood pressure data is not very accurate; In addition, because the electronic sphygmomanometer itself is more sensitive, if the operation of the use of irregularities can also cause inaccurate measurement data, such as due to the sphygmomanometer cuff or wristband and other fixed parts and the cuff of the It is recommended that first of all, choose to buy the regular manufacturer, regular brand, through the national certification of the electronic blood pressure monitor, followed by a strict operation in accordance with the norms, and mercury sphygmomanometer for many times to compare, correction to clarify the accuracy of the electronic blood pressure monitor. It is recommended to measure blood pressure at least three times each time to take the average to prevent errors.