A molding device for continuous casting equipped with an agitator which receives liquid-phase melt of a conductive material and from which a solid-phase cast product is taken out through the cooling of the melt, the molding device comprising: a casting mold that receives the liquid-phase melt from an inlet side and discharges the solid-phase cast product from an outlet side by cooling; and an agitator that is provided outside the casting mold, and includes an electrode unit that includes first electrodes positioned at the top and a second electrode positioned therebelow, and a magnetic field generation device that includes a permanent magnet for applying a magnetic field to the liquid-phase melt, the first electrodes being provided so as to conduct electricity to the liquid-phase melt, and the second electrode is provided so as to conduct electricity to the solid-phase cast product, the first and second electrodes being adapted so as to conduct electricity in the vertical direction through the melt and the cast product provided therebetween, and the magnetic field generation device being provided outside the casting mold and generating magnetic lines of force in a lateral direction so that the magnetic lines of force penetrate into the casting mold, reach the inside of the casting mold, and are applied to the melt in the lateral direction crossing the current, wherein the magnetic field generation device includes a plurality of pairs of magnetic poles that are formed of an S pole and an N pole, and sides, which are close to and distant from the casting mold, of each magnetic pole are magnetized as an inner magnetic pole and an outer magnetic pole, respectively, wherein the plurality of pairs of magnetic poles are arranged around a vertical axis and on the outer periphery of the casting mold, wherein the plurality of inner magnetic poles of the plurality of pairs of magnetic poles are S poles and the plurality of outer magnetic poles thereof are N poles, or the plurality of inner magnetic poles of the plurality of pairs of magnetic poles are N poles and the plurality of outer magnetic poles thereof are S poles. a casting mold that receives the liquid-phase melt from an inlet side and discharges the solid-phase cast product from an outlet side by cooling; and an agitator that is provided outside the casting mold, and includes an electrode unit that includes first electrodes positioned at the top and a second electrode positioned therebelow, and a magnetic field generation device that includes a permanent magnet for applying a magnetic field to the liquid-phase melt, the first electrodes being provided so as to conduct electricity to the liquid-phase melt, and the second electrode is provided so as to conduct electricity to the solid-phase cast product, the first and second electrodes being adapted so as to conduct electricity in the vertical direction through the melt and the cast product provided therebetween, and the magnetic field generation device being provided outside the casting mold and generating magnetic lines of force in a lateral direction so that the magnetic lines of force penetrate into the casting mold, reach the inside of the casting mold, and are applied to the melt in the lateral direction crossing the current, wherein the magnetic field generation device includes a plurality of pairs of magnetic poles that are formed of an S pole and an N pole, and sides, which are close to and distant from the casting mold, of each magnetic pole are magnetized as an inner magnetic pole and an outer magnetic pole, respectively, wherein the plurality of pairs of magnetic poles are arranged around a vertical axis and on the outer periphery of the casting mold, wherein the plurality of inner magnetic poles of the plurality of pairs of magnetic poles are S poles and the plurality of outer magnetic poles thereof are N poles, or the plurality of inner magnetic poles of the plurality of pairs of magnetic poles are N poles and the plurality of outer magnetic poles thereof are S poles.