The　electronic　sphygmomanometer　with　function　of　hemodynamic　parameters　detecting　is　designed　in　this　paper,　it　can　not　only　measure　systolic　and　diastolic　blood　pressure,　but　also　calculate　cardiovascular　hemodynamic　parameters.　It　adopts　the　C8051F020　single-chip　microcomputer　as　the　core　of　calculating　and　processing　of　the　device.　The　method　of　oscillometric　is　used　to　get　the　mean　arterial　pressure,　systolic　blood　pressure　and　diastolic　blood　pressure.　The　electronic　sphygmomanometer　with　the　function　of　hemodynamic　parameters　detecting　can　measure　the　systolic　and　diastolic　blood　pressure　accurately,　and　it　can　also　get　the　result　of　hemodynamic　parameters　from　people.　The　systolic　and　diastolic　blood　pressure　and　the　hemodynamic　parameters　can　be　got　in　the　same　time　with　the　instrument　which　is　designed　in　this　paper,　the　instrument　provides　more　reliable　evidence　for　the　diagnosis　of　disease,　and　it　enriches　the　functionality　of　electronic　sphygmomanometer,　and　expands　the　application　scope　of　the　electronic　sphygmomanometer.　©　2012　IEEE.