The　electromagnetic　switch　is　an　electric　appliance　that　controls　a　load　by　energizing　a　coil　to　generate　an　electromagnetic　force,　and　is　widely　used　in　a　power　application.　Rapid　control　prototype　verification　system　for　electromagnetic　switch　based　on　CompactRIO　is　introduced　in　this　paper.　The　LabVIEW　program　of　FPGA,　RT　controller　and　host　PC　are　written　in　the　system.　The　data　acquisition　realizes　synchronous　data　acquisition　of　multiple　signals,　and　uses　the　shared　variable　technology　to　transmit　the　collected　data　to　the　upper　PC　for　analysis　and　storage.　The　intelligent　control　realizes　the　control　of　starting,　holding　and　breaking.　The　starting　process　is　controlled　by　on/off　mode;　the　holding　process　is　controlled　by　PID　coil　current　closed　loop　control,　which　uses　digital　technology　to　adjust　the　PWM　duty　cycle　dynamically;　the　breaking　process　realizes　demagnetizing　quickly　by　using　a　three-state　control　circuit.　The　reliability　of　the　system　is　studied　by　means　of　experimental　tests.　The　system　provides　technical　support　for　electromagnetic　switch　monitoring　and　intelligent　control,　which　has　theoretical　and　practical　significance　for　shortening　product　development　cycle,　reducing　development　cost　and　improving　switch　operation　reliability.　©　2019　by　International　Academic　Publishers　Ltd.