Mg-Al　spinel　is　synthesized　by　using　industrial　waste-residue　and　basic　magnesium　carbonate　in　the　aluminum　factory　as　the　main　raw　materials.　The　influence　of　V2O5　and　Fe2O3　mineralizers　on　the　structure,　cell　parameters　and　microscopic　morphology　of　synthesized　Mg-Al　spinel　has　been　discussed.　The　Mg-Al　spinel　is　characterized　by　using　XRD,　SEM　and　relevant　analytical　software,.　such　as　Philips　plus,　Rietveld　quantification　and　so　on.　The　experimental　results　show　that　certain　amounts　of　V2O5　and　Fe2O3　are　beneficial　to　the　formation　of　Mg-Al　spinel,　and　the　optimum　addition　of　V2O5　and　Fe2O3　is　respectively　2wt%　and　3wt%.　V2O5　has　few　effects　on　cell　parameters　of　Mg-Al　spinel;　but　Fe2O3　can　form　solid　solution　with　Mg-Al　spinel　in　which　Mg-Fe　spinel　can　also　dissolve,　to　form　continuous　solid　solution.　Therefore,　with　the　increase　of　Fe2O3　content,　the　cell　parameters　of　Mg-Al　approximately　present　linear　increase.