In　this　paper,　metal　reduction　preparation　of　TiB2　powder　via　magnesium　reduction　and　aluminothermic　reduction　were　studied.　The　carbon　rod　arc　heating　generated　from　the　spread　of　the　reaction　of　TiB2,　and　then　the　examinations　were　performed　after　pickling,　crushing　and　grinding　such　as　SEM　and　XRD.　The　results　showed　that　the　aluminothermic　reduction　occurred　into　the　powder　impurity　phase　less,　but　the　need　for　better　technology　separation　of　Al2O3.　Magnesium　reduction　reaction　products　with　more　impurities,　pickling　process　removes　only　the　reactants　of　MgO　and　other　impurities　not　removed　in　the　air　and　impurities　were　analyzed　and　compared.