The　electron　backscatter　diffraction　approach　and　five　parameter　analysis　method　are　used　to　investigate　the　orientation　textures　of　boundary　planes　in　a　(La0.67Nd0.33)B-6　polycrystalline　bulk　prepared　by　spark　plasma　sintering.　While　the　entire　boundaries　overall　favour　the　{001}　orientation,　the　orientation　textures　of　various　boundary　planes　are　not　homogeneous.　If　divided　by　the　boundary　type,　the　LaB6/LaB6　grain　boundary　planes　favour　the　{001}　orientation,　the　NdB6/NdB6　grain　boundary　plane　orientation　approaches　the　{011}　position,　and　the　LaB6/NdB6　phase　boundary　planes　favour　the　{011}　orientation.　If　divided　by　the　misorientation　angle,　boundaries　with　a　misorientation　angle　lower　than　10　degrees　favour　the　{011}　orientation　and　boundaries　with　a　misorientation　angle　higher　than　10　degrees　favour　the　{001}　orientation.　Possible　origins　of　the　anisotropic　distribution　of　boundary　planes　are　analyzed.　The　potential　effects　of　anisotropy　in　boundary　plane　distributions　on　electron　emissivity　are　also　suggested.