The　hot-rolled　textures　in　a　5083　aluminum　alloy　were　measured　by　electron　backscattered　diffraction　(EBSD)　technique.　The　results　show　that　rolling　texture　components　are　uneven　at　different　locations,　and　the　grain　boundary　planes　are　textured.　Grain　boundary　planes　tend　to　the　{111}　orientation　at　the　center　of　the　specimen,　and　their　amount　is　50%　higher　than　that　of　the　random　distribution　case;　grain　boundary　planes　on　the　surface　of　the　specimen　tend　to　the　{110}　and　{112}　orientations,　and　their　amount　is　28%　higher　than　that　of　the　random　distribution　case.　Moreover,　anisotropic　distribution　of　grain　boundary　planes　appears　at　both　low　and　high　angle　boundaries.