Residual　stress　is　one　of　the　most　important　factors　for　stability　of　large-section　angles　applied　in　transmission　tower　projects.　The　leg　length　of　large-section　angle　almost　exceeds　200　mm,　due　to　which　the　residual　stress　distribution　may　differ　greatly　from　normal　sections.　An　experimental　study　on　the　residual　stress　of　L300×30　large-section　angles　with　and　without　galvanization　was　conducted　with　hole-drilling　method.　Based　on　the　obtained　distributions　of　welding　longitudinal　and　transverse　residual　stresses,　the　influences　of　galvanizing　and　the　distance　to　welding　seam　on　distribution　of　longitudinal　and　transverse　residual　stresses　were　studied.　The　patterns　of　residual　stress　distribution　of　large　section　angles　with　welding　end-plate　were　achieved.　It　is　indicated　that　the　distribution　of　welding　residual　stress　exhibits　a　wave　variation　with　the　increasing　distance　to　welding　seam,　and　the　galvanizing　decreases　the　maximum　residual　stress　amplitude,　leading　to　a　gentle　distribution　curve.　The　residual　stress　distribution　law　of　hot-rolled　angles　with　and　without　galvanization　was　investigated,　and　the　effects　of　welds　and　galvanizing　process　were　also　assessed,　providing　references　for　future　analysis　on　the　performance　of　the　large　section　angles.　©　2020,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.