The invention discloses an electronic sphygmomanometer, which comprises an automatic inflation and deflation device, a pressure device, a measuring device, a control device, and first and second display devices, and uses the automatic inflation and deflation device to inflate and deflate the pressure device , use the sensor to sense the air bag pressure signal and obtain the pressure value through calculation and processing, and display it in the analog mercury column scale displayed by the first display device, wherein the analog mercury column scale is divided into several scale segments, according to the pressure value At least the analog mercury column scale section where the pressure value is located is displayed, and the analog mercury column is indicated on the scale scale corresponding to the pressure value, so that the doctor can listen to the Korotkoff sound with a stethoscope to obtain the blood pressure value. It can also directly display the measurement results automatically calculated by using the principle of the oscillometric method in digital form on the second display device. In this way, the electronic sphygmomanometer does not need to display a mercury column scale in the form of a complete and coherent long column, but displays it in segments, which can solve the problems of excessive size and high cost of the liquid crystal display screen, and does not require measuring personnel Manually inflate and deflate, and automatically get the measurement results, which can reduce the human operation during the measurement process and improve the accuracy of the measurement.