A permanent magnet-type molten metal stirring device comprising: a magnetic field unit that includes a permanent magnet allowing magnetic lines of force to vertically extend in molten metal; and a drive unit that drives the molten metal with an electromagnetic force generated by the magnetic lines of force generated from the permanent magnet and current allowed to flow through the molten metal by the drive unit, characterized in that: the permanent magnet-type molten metal stirring device further comprises a support body that is made of a refractory and insulates and shields heat generated from the molten metal to the permanent magnet; that the magnetic field unit is provided above the support body and the drive unit is provided below the support body; and in that the drive unit includes: - a cylindrical drive unit main body that is mounted on a lower portion of the support body and includes a passage formed therein and laterally extending in a longitudinal direction, and - a pair of electrodes (21A,21B) that are provided at positions where the pair of electrodes (21A,21B) being opposed each other along a width direction via the passage, the pair of electrodes (21A,21B) being exposed to the passage, and the pair of electrodes (21A,21B) allowing current in the molten metal, the current intersecting the magnetic lines of force. a magnetic field unit that includes a permanent magnet allowing magnetic lines of force to vertically extend in molten metal; and a drive unit that drives the molten metal with an electromagnetic force generated by the magnetic lines of force generated from the permanent magnet and current allowed to flow through the molten metal by the drive unit, characterized in that: the permanent magnet-type molten metal stirring device further comprises a support body that is made of a refractory and insulates and shields heat generated from the molten metal to the permanent magnet; that the magnetic field unit is provided above the support body and the drive unit is provided below the support body; and in that the drive unit includes: - a cylindrical drive unit main body that is mounted on a lower portion of the support body and includes a passage formed therein and laterally extending in a longitudinal direction, and - a pair of electrodes (21A,21B) that are provided at positions where the pair of electrodes (21A,21B) being opposed each other along a width direction via the passage, the pair of electrodes (21A,21B) being exposed to the passage, and the pair of electrodes (21A,21B) allowing current in the molten metal, the current intersecting the magnetic lines of force. the permanent magnet-type molten metal stirring device further comprises a support body that is made of a refractory and insulates and shields heat generated from the molten metal to the permanent magnet; that the magnetic field unit is provided above the support body and the drive unit is provided below the support body; and in that the drive unit includes: - a cylindrical drive unit main body that is mounted on a lower portion of the support body and includes a passage formed therein and laterally extending in a longitudinal direction, and - a pair of electrodes (21A,21B) that are provided at positions where the pair of electrodes (21A,21B) being opposed each other along a width direction via the passage, the pair of electrodes (21A,21B) being exposed to the passage, and the pair of electrodes (21A,21B) allowing current in the molten metal, the current intersecting the magnetic lines of force. - a cylindrical drive unit main body that is mounted on a lower portion of the support body and includes a passage formed therein and laterally extending in a longitudinal direction, and - a pair of electrodes (21A,21B) that are provided at positions where the pair of electrodes (21A,21B) being opposed each other along a width direction via the passage, the pair of electrodes (21A,21B) being exposed to the passage, and the pair of electrodes (21A,21B) allowing current in the molten metal, the current intersecting the magnetic lines of force.