Fiber porcelain light-weight function board and preparation method thereof

The invention relates to a fiber porcelain light-weight function board and a preparation method thereof, and belongs to the field of a building material. The fiber porcelain light-weight function board consists of an unfoamed inorganic material layer and a foamed inorganic material layer, wherein according to a material formula of the foamed inorganic material layer, limestone, plaster, silicon carbide powder or glass powder is mixed in the conventional porcelain raw material; for the mixing proportion, 10 to 35 parts of limestone, plaster, silicon carbide powder or glass powder are included in 100 parts of raw materials, and the rest is the conventional porcelain raw material; the unfoamed inorganic material layer and the foamed inorganic material layer are fired into a whole through once high-temperature sintering; after the high-temperature sintering, the thickness of the unfoamed inorganic material layer is 3 to 5mm, and the thickness of the foamed inorganic material layer is 60 to 200mm; the length and w