The present invention provides an apparatus for manufacturing artificial marble including a granite soil storage unit for supplying a granite soil; a granite soil heating unit for heating the soil; a resin storage unit for storing a thermoplastic polyurethane (TPU) resin; a mixing-transporting unit for accommodating the resin and the heated granite soil therein and melting and mixing them to produce and simultaneously transport an artificial marble slurry; a material guide unit for guiding the soil and the resin into the mixing-transporting unit; a discharge unit for discharging the slurry; a mold supply unit for continuously supplying a mold for accommodating and molding the slurry; a mold guide unit for guiding the mold to accommodate the slurry; a forming unit for forming an artificial marble by applying vibration and pressure to the slurry; an extraction unit for extracting the mold; and a lamination unit for laminating and storing the mold extracted.