Direct bond magnesite chrome brick refers to the refractory products directly combined with periclase and magnesia chrome spinel as the main crystal. The brick is made of high-purity sintered magnesia and chromite with SiO2 less than 2% by high-temperature sintering. The direct bonded magnesia chrome brick is a product made of high-purity or sub high-purity sintered or fused magnesia and chrome concentrate as raw materials. Direct bonding is a kind of bonding produced by direct contact between solid grains. The brick is made of high-purity sintered magnesia and chrome concentrate with SiO2<2% as raw materials and sintered at high temperature. The direct bonding degree of the product increases with the decrease of SiO2 content and the increase of sintering temperature.