Rivet　force　is　decided　by　the　coil　discharge　current　and　is　the　key　to　implement　riveting　in　electromagnetic　riveting.　The　discharge　current　can　be　described　by　amplitude　and　frequency　parameters.　Based　on　discharge　circuit　analysis　of　electromagnetic　riveting,　the　coil　discharge　current　was　measured　with　the　diverter　and　the　effect　of　low　voltage　electromagnetic　riveting　system　parameters　on　discharge　current　was　analyzed.　The　results　showed　that　the　coil　discharge　current　was　a　damping　vibration　waveform　and　the　amplitude　was　in　hundreds　of　ampere　and　the　period　was　in　millisecond.　The　4mm　TA1　rivet　could　be　formed　in　low　voltage　electromagnetic　riveting.　At　the　same　time,　different　parameters　including　coil　turns,　wire　section　size,　discharge　capacitance　and　drive　plate　thickness　have　significant　influence　on　the　amplitude　and　the　frequency　of　coil　discharge　current.　The　matching　relationship　of　resistance,　inductance　and　capacitance　need　to　be　optimized　to　meet　the　different　requirements　for　process　discharge　current　in　electromagnetic　riveting.