Based　of　PXI　(PCI　Extensions　for　Instrumentation)　bus　structure,　a　measurement　and　control　system　for　medium　and　high　pressure　hydraulic　pump　test　platform　is　designed　in　this　paper.　This　system　is　comprehensive　testing　equipment　which　has　adopted　the　traditional　technologies　include　hydraulic,　computer,　virtual　instrument　and　detecting.　Its　measurement　and　control　system　has　introduced　new　techniques　with　combining　PXI　bus　structure　and　relay,　which　can　realize　manual/automatic　synchronous　operation　and　one　key　operation.　Use　graphic　language　Lab　VIEW　9.0　as　its　developing　platform,　the　system　realizes　synchronically　display　of　the　mechanical　instrument　and　the　virtual　instrument　which　has　increased　the　test　accuracy　and　speed.