A method of driving conductive molten metal, the method comprising: making direct current flow vertically between a first electrode (14a,44a) which is provided so as to be exposed to an inner surface of a melting chamber of a melting furnace body receiving conductive molten metal, and a second electrode (15a,45a), which is provided so as to be exposed to the inner surface of the melting chamber of the melting furnace body and which is provided below the first electrode (14a,44a), through conductive molten metal received in the melting chamber; applying a magnetic field radially toward the center of the melting chamber from the outside of the melting furnace or toward the outside of the melting furnace from the center of the melting chamber to apply torque, which is generated around a vertical axis, to the molten metal, which is present in the melting chamber, by an electromagnetic force caused by the intersection of the direct current and the magnetic field; and rotating the molten metal by the torque to discharge the molten metal to a holding furnace, which is provided on the melting chamber, from an outlet opening of a partition plate provided between the melting chamber and the holding furnace and to suck the molten metal, which is present in the holding furnace, from an inlet opening of the partition plate, wherein electrodes, which are formed integrally with the melting furnace body as a part of the melting furnace body, are used as the first and second electrodes (14a,44a) (15a,45a), and an electrode of which electrical resistance is higher than electrical resistance of the molten metal is used as the first electrode (14a,44a), and wherein an upper end portion of a side wall of the melting furnace body is formed as the first electrode (14a,44a), a trench-shaped pool for receiving a low-melting-point alloy is formed on the first electrode (14a,44a), a low-melting-point alloy of which melting temperature is lower than melting temperature of the molten metal and an electrode component, which is made of metal and is used to be connected to a power source making the direct current flow, are received in the pool in a state in which a gap remains, and the first electrode (14a,44a) and the electrode component are capable of being electrically connected to each other through the molten low-melting-point alloy. making direct current flow vertically between a first electrode (14a,44a) which is provided so as to be exposed to an inner surface of a melting chamber of a melting furnace body receiving conductive molten metal, and a second electrode (15a,45a), which is provided so as to be exposed to the inner surface of the melting chamber of the melting furnace body and which is provided below the first electrode (14a,44a), through conductive molten metal received in the melting chamber; applying a magnetic field radially toward the center of the melting chamber from the outside of the melting furnace or toward the outside of the melting furnace from the center of the melting chamber to apply torque, which is generated around a vertical axis, to the molten metal, which is present in the melting chamber, by an electromagnetic force caused by the intersection of the direct current and the magnetic field; and rotating the molten metal by the torque to discharge the molten metal to a holding furnace, which is provided on the melting chamber, from an outlet opening of a partition plate provided between the melting chamber and the holding furnace and to suck the molten metal, which is present in the holding furnace, from an inlet opening of the partition plate, wherein electrodes, which are formed integrally with the melting furnace body as a part of the melting furnace body, are used as the first and second electrodes (14a,44a) (15a,45a), and an electrode of which electrical resistance is higher than electrical resistance of the molten metal is used as the first electrode (14a,44a), and wherein an upper end portion of a side wall of the melting furnace body is formed as the first electrode (14a,44a), a trench-shaped pool for receiving a low-melting-point alloy is formed on the first electrode (14a,44a), a low-melting-point alloy of which melting temperature is lower than melting temperature of the molten metal and an electrode component, which is made of metal and is used to be connected to a power source making the direct current flow, are received in the pool in a state in which a gap remains, and the first electrode (14a,44a) and the electrode component are capable of being electrically connected to each other through the molten low-melting-point alloy.