A　GIS　(gas　insulated　switchgear)　acoustic　vibration　joint　detection　system　based　on　LabVIEW　software　is　developed　for　the　purpose　to　collect　the　acoustic　emission　and　vibration　signals　under　the　action　of　foreign　body　defects　in　GIS　online,　and　to　meet　the　requirements　of　system　functions,　such　as　data　acquisition,　recording,　analysis　and　evaluation,　of　foreign　body　defects.　Firstly,　based　on　analyzing　the　functional　requirements　of　the　system,　acoustic　emission,　vibration　sensors　and　high-speed　data　acquisition　cards　are　used　to　build　a　portable　multi-channel　GIS　acoustic　and　vibration　signal　acquisition　device.　Secondly,　using　the　design　idea　of　modularization　and　functionalization,　the　software　design　focuses　on　the　development　of　the　collection　and　recording,　analysis　and　processing,　storage　and　viewing　of　the　two-way　signal　of　acoustic　and　vibration,　and　the　development　of　testing　and　evaluation　interface.　Finally,　environmental　sensors　are　used　to　build　a　detection　module　of　environmental　variables　in　GIS　detection　scene,　and　Matlab　software　is　called　to　perform　spectrum　analysis　and　result　evaluation　of　the　extracted　acoustic　and　vibration　signals.　Experimental　results　show　that　the　system　can　effectively　obtain　the　acoustic　and　vibration　signals　generated　by　foreign　body　defects　in　the　GIS　by　connecting　the　measuring　sensors　and　realize　the　3D　dynamic　simulation　and　flight　map　function　of　the　free　metal　particles　of　foreign　body　defects　in　the　GIS.　The　developed　system　has　strong　functional　extensibility,　simple　and　intuitive　software　interface,　and　is　easy　to　operate.　The　detection　accuracy　of　GIS　foreign　body　defects　is　greater　than　90%,　which　brings　convenience　to　GIS　inspection　work.　©　2021,　Editorial　Office　of　Journal　of　Xi＇an　Jiaotong　University.　All　right　reserved.