In　this　paper,　the　automobile　windshield　antenna　modeling　research,　and　through　the　antenna　packaging　material　setting,　the　surrounding　air　domain　boundary　conditions　setting,　windshield　and　other　materials　of　the　boundary　of　the　fuzzy　processing.　And　it　get　the　wire　harness　by　the　electric　field　mode　distribution.　The　results　are　analyzed　and　processed.　At　the　same　time,　it　get　the　antenna　far　field　mode,　and　analysis.　The　paper　give　a　measure　to　improve　the　model＇s　electromagnetic　compatibility　is　also　proposed.　©　2023　IEEE.