The invention discloses a method for preparing molten salt-ceramic phase-change heat-storage material and belongs to the field of phase-change heat-storage materials. The method includes preparing high-temperature molten salt particles, coating eutectic salt in the sol-gel process of a precursor, and subjecting molten salt phase-change samples to press-sintering. The method is simple, low in costand easy to realize large-scale production, solves the problems of high moisture-absorption and low intensity of high-temperature structure of the high-temperature molten salt phase change material, and has a great significance in expanding application environment of the high-temperature phase-change heat-storage material.