The invention discloses a preparation method of a large one-stone multi-surface ceramic board. The preparation method comprises the following steps that (1) a blank body of the large ceramic board isprepared; (2) the blank body is decorated in an ink-jet printing mode, wherein a large picture is divided into multiple small pictures at the input end of an ink-jet printer, the edges of patterns ofthe small pictures are extended, input in the ink-jet printer and printed on the blank body, and each small picture corresponds to one blank body; (3) firing is conducted in a kiln, and the large ceramic board with pattern texture decoration is obtained; (4) the fired large ceramic board is subjected to edge polishing treatment, which is used for matching of the patterns of every two adjacent large ceramic boards. Correspondingly, the invention further discloses the large ceramic board obtained through the preparation method. After splicing of the large ceramic boards, the patterns can be matched, and after multiple large ceramic boards are laid, the pattern texture can extend in one or more surfaces, so that the pattern texture is casual, natural and high in three-dimensional effect.