This　paper　mainly　introduces　the　development　of　the　portable　cardiovascular　hemodynamic　parameters　detecting　instrument　based　on　mu　C/OS-II　embedded　real-time　kernel.　This　instrument　takes　16-bit　micro-controller　with　ultra-low　power　belonging　to　MSP430　series　as　the　core　unit　and　integrates　LCD　interface　circuit,　pulse　wave　amplifier　circuit,　keyboard　interface　circuit　and　serial　communication　circuit.　At　the　same　time　we　replant　mu　C/OS-II　operation　system　into　the　instrument.　And　the　instrument　integrates　the　functions　of　the　sampling　and　displaying　of　pulse　wave,　calculation　of　the　hemodynamic　parameter　and　serial　communicating　and　so　on.　The　instrument　runs　steadily　and　possesses　the　significant　features　such　as　the　low　power,　small　volume,　good　real-time　and　portability,　so　It　is　adapted　to　family　health　care.