Finite　element　simulation　is　utilized　in　an　aluminum　alloy　2014　butt-welded　flange　under　AC　Tungsten　Inert　Gas　(AC-TIG)　welding　condition.　The　simulated　results　are　in　good　agreement　with　the　residual　stress　for　the　plate　test　using　the　actual　welding　parameters.　Furthermore,　characteristics　of　residual　stress　could　be　investigated　in　detail　in　several　aspects,　such　as　the　welding　structures,　the　welding　sequences,　the　time　intervals,　preheating,　and　repair　weld.　The　intermittent　welding　may　be　more　convenient　and　advantageous　for　the　practical　applications　to　reduce　the　stress,　and　the　local　repair　welding　may　cause　more　stress　within　the　repairing　region　obviously.