With　the　rapid　development　of　high-voltage　AC　transmission　technology　in　China　and　the　limitation　of　land　corridors,　the　construction　of　high-voltage　AC　transmission　lines　cannot　avoid　the　situation　of　crossing　over.　The　power　frequency　electric　field　generated　by　high　voltage　transmission　lines　has　a　certain　influence　on　human　activities　near　the　ground,　and　the　electric　field　distribution　under　the　crossover　area　is　more　complex.　Since　the　existing　literature　only　discusses　the　influence　of　various　factors　on　the　below　electric　field　from　one　observation　path,　four　representative　observation　lines　in　the　1.5m　plane　are　selected　to　be　studied.　Using　Ansys　finite　element　simulation　software,　a　three-dimensional　spatial　model　of　AC　transmission　lines　crossing　and　crossing　region　was　established　to　study　the　influence　rules　of　wire　height,　phase　sequence,　crossing　angle,　phase　difference,　arrangement　mode　and　other　factors　on　the　e-lectric　field　intensity　within　1.5　m　height　near　the　ground　in　the　lower　region.　Measures　to　reduce　the　intensity　of　the　near-ground　electric　field　in　the　lower　region　were　proposed,　and　the　effect　of　the　electric　field　was　effectively　reduced　under　the　crossing　region　of　AC　transmission　lines,　which　can　also　provide　some　reference　for　the　design　and　planning　of　the　crossing　region　lines.　©　2022　Editorial　Department　of　Electric　Machines　and　Control.　All　rights　reserved.