The invention relates to a methane synthesis catalyst layered carrier and a preparing method thereof and belongs to the technical field of methane synthesis catalysts.The methane synthesis catalyst carrier is mainly composed of Si, Al, O and Mg and is of a layered structure, and specific surface area can reach 260-400 m2/g.The layered carrier is large in specific surface area, stable in structure and high in hydration resistance.The invention further relates to the preparing method of the methane synthesis catalyst layered carrier.Raw materials are cheap and easy to obtain, the preparing process is simple, condition controllability and repeatability are high, and industrial production can be achieved quite easily.A methane synthesis catalyst prepared with the layered carrier is high in activity and high in high temperature resistance and hydration resistance, and can stay stable for a long time under high temperature, high oxycarbide content and high moisture partial pressure.