To　solve　the　problems　during　the　process　of　direct　nitridation　for　AlN　powders　synthesis,　Zn　element　with　a　high　saturated　vapor　pressure　was　used　as　alloy　element　of　starting　materials,　and　the　effect　of　additive　Zn　element　on　the　synthesis　of　AlN　for　Al-Zn　and　Al-Mg-Zn　systems　was　investigated.　The　results　show　that　the　volatilization　of　Zn　can　destroy　the　nitrided　layer　on　the　surface　of　alloy　melt　to　prevent　the　agglomeration　and　improve　the　productive　rate　of　AlN.　On　the　other　hand,　Zn　element　has　been　proved　not　to　be　a　good　deoxidizer　as　Mg　element　to　avoid　the　formation　of　Al2O3.　Thus,　Al-Mg-Zn　alloy　is　considered　as　a　better　starting　material　for　the　direct　nitridation　method　to　obtain　pure　AlN　powders　with　lower　oxygen　and　metal　residues.