The invention discloses a marble slab embedded with shell mosaics. The marble slab embedded with the shell mosaics comprises a marble slab body (1), the shell mosaics (3) and a marble base layer base plate (4), wherein the back face of the marble slab body (1) is arranged on the marble base layer base plate (4); hole grooves (2) are formed in the surface of the marble slab body (1), the shell mosaics (3) are embedded into the hole grooves (2), and gaps around the shell mosaics (3) are filled with marble glue. The size of the hole grooves (2) before polishing is 1-2mm smaller than the size of the shell mosaics, and the size of the hole grooves (2) after polishing is close to the size of the shell mosaics (3). The marble slab embedded with the shell mosaics can deal with the problem of the straightness and flatness of splicing caused by big difference between a marble water cutting process and a shell mosaic manual cutting process.