When　lightning　strikes　the　transmission　line　tower,　the　lightning　current　flows　into　the　soil　along　the　tower　grounding　device,　causing　serious　AC　interference　with　nearby　steel-buried　pipelines.　To　tackle　this　problem,　this　paper　uses　CDEGS,　the　professional　power　analysis　software,　to　establish　a　three-dimensional　(3D)　simulation　model　for　the　transmission　line　and　surrounding　pipelines　based　on　the　actual　engineering　information.　This　model　predicts　the　coating　stress　voltage　of　steel　pipelines　in　public　corridors　when　typical　lightning　strikes　towers.　Lightning　current　includes　the　first　return　and　subsequent　return　strokes.　Resistance　and　inductance　couplings　are　considered　in　the　calculation.　In　addition,　the　paper　uses　COMSOL　Multiphysics　software　to　calculate　the　distribution　of　potential　and　current　density　on　the　surface　of　adjacent　pipe　under　the　first　lightning　return　stroke,　providing　a　new　analysis　idea　for　mitigating　the　AC　interference　caused　by　the　lightning　current.　The　conclusions　of　this　paper　can　be　used　as　a　reference　for　the　analysis　of　transmission　line　AC　interference　with　adjacent　steel-buried　pipelines　in　lightning　strikes.