The invention discloses a matt glaze ceramic brick and a preparation method thereof. The preparation method of the matt glaze ceramic brick comprises the following steps: A, performing press forming on a blank body, and placing the blank body in a roller kiln for drying to form a ceramic brick blank body; B, applying a matte face glaze on the surface of the ceramic brick blank body to form a matteface glaze layer; C, applying a matte transparent glaze on the surface of the matte face glaze layer to form a first matte transparent glaze layer; D, performing surface decoration on the first mattetransparent glaze layer by inkjet printing, flat panel printing or roller printing to form a pattern decoration layer; E, applying a matte transparent glaze on the pattern decoration layer to form asecond matte transparent glaze layer; and F, performing firing molding in a kiln to obtain the matt glaze ceramic brick. Furthermore, the thickness of a surface glaze layer of the matte glaze ceramicbrick is improved, the surface flatness of the matt glaze ceramic brick is improved, the surface gloss of the matte glaze ceramic brick is effectively reduced, and the pattern decoration effect of thepattern decoration layer of the matt glaze ceramic brick is improved.