The invention relates to a high-temperature-resistant high-strength coating base cloth. The high-temperature-resistant high-strength coating base cloth comprises a fabric layer formed by blending warp yarns formed by arranging polyester fiber filaments and aramid fibers in a mutually alternated mode and weft yarns containing polyamide monofilaments, and a polyurethane elastic layer is formed on the fabric layer in a poured mode. According to the blended coating base cloth for a high-temperature-resistant conveyor belt, the bonding property between the polyurethane elastic layer and the fabric layer is good, friction property is improved, and it can be expected that the high-temperature-resistant high-strength coating base cloth has the long service life.