The invention provides a forsterite refractory material for a high-temperature kiln and a preparation method of the material. According to the technical scheme, silicon-containing raw materials, magnesium salt, zinc-containing raw materials and iron powder are mixed, pressed and formed, subjected to heat treatment under the reduction atmosphere, ground and screened to obtain a material A; the material A, boronic acid, surfactant, thickener and additive are mixed, water is added, ball milling is conducted, and mixed slurry is obtained; magnesite fine powder, the silicon-containing raw materials, magnesium salt and the material A are mixed, pressed and formed, subjected to heat treatment and vacuum impregnation, subjected to heat treatment again, ground and screened, and a material B and a material C are obtained; magnesite particles, magnesite fine powder, the silicon-containing raw materials, the material B, the material C and the material A are mixed, pressed and formed and subjected to heat treatment, and the forsterite refractory material for the high-temperature kiln is obtained. Raw materials are wide in source, production cost is low, and the prepared forsterite refractory material for the high-temperature kiln is larger in normal-temperature compressive strength, good in thermal shock stability, high in refractoriness under load and excellent in erosion resistance.