Abstract: Disclosed is a method of producing patterned artificial marble, including applying a main slurry for acrylic artificial marble having a single color or a mixed color through a fixed main nozzle to a predetermined thickness on a film being conveyed at a predetermined speed; lowering a patterning nozzle, which is mounted above the film being conveyed so as to be intermittently vertically movable, to the bottom of the main slurry applied on the film conveyed below the patterning nozzle, and then raising it while injecting a patterning slurry having a color different from that of the main slurry into the main slurry to create a desired pattern; and curing the patterned artificial marble slurry having a predetermined thickness in which the patterning slurry is injected into the main slurry to create a desired pattern, and then conducting cutting to a predetermined size and sanding, thus obtaining patterned artificial marble.