The　electromagnetic　wave　interference　and　electromagnetic　heat　loss　generated　by　the　inductor　in　the　LC　filter　in　the　integrated　circuit　have　an　awful　impact　on　the　performance　and　stability　of　the　integrated　circuit.　This　paper　proposes　a　square　spiral　inductor　that　dedicated　to　LC　filtering　in　integrated　circuits.　Based　on　the　finite　element　multiphysical　simulation,　the　multiphysical　coupling　research　of　the　square　spiral　inductor　is　carried　out.　The　results　show　that　under　low-frequency　excitation,　the　electric　field　mode　intensity　at　the　groove　is　the　largest,　and　it　tend　to　generate　electromagnetic　interference　to　the　surrounding　area.　In　practical　use,　it　is　necessary　to　provide　insulation　protection　for　the　concentrated　arc　length　range　of　50mmm200mm.　Under　high-frequency　excitation,　it　is　necessary　to　suppress　the　distribution　of　the　electromagnetic　field　in　space　and　reduce　the　electromagnetic　interference　to　the　peripheral　components　of　the　integrated　circuit.　The　electromagnetic　heat　loss　is　obvious　at　the　tiny　corners,　and　the　highest　volume　loss　densities　are　4.96*1011W/m3　and　6.61*1010　W/m3.　©　2022　IEEE.