The invention discloses a fabrication method of an antique building facing material. The method comprises the following steps: stirring two types of earth with different chemical compositions into mud respectively, and performing aging treatment; cutting the aged mud into 10mm-20mm thick pieces, keeping water content of the mud at 20%-25%, alternately layering and stacking for blending to eliminate spacing between stacked layers; putting in a mold to make into briquette, and drying in the shade; baking in a kiln with a baking process the same as a brick firing process, and performing wet rubbing after leaving the kiln. The antique building facing material made by the technical proposal of the invention can be used for constructing antique buildings as ancient buildings and restore scenes of the ancient buildings; and the buildings built by the antique building facing material need no cleaning and can keep clean surfaces for long term.