Abstract: Provided is a stalk switch device which does not cause a contact failure of a switching device of an operating ring upon rotating and is suitable for a long life-span. The stalk switch device is configured such that a permanent magnet is fixed to a driven member, which is driven by rotation of an operating ring, and a change in magnetic field caused by the movement of the permanent magnet is detected by a giant magnetoresistance (GMR) sensor mounted on a circuit board in a housing. The operating ring, the driven member, and the circuit board are retained by a holder, and the holder is fixed to the housing. As the driven member, for example, a cylindrical rotating member formed integrally with the operating ring, a rotation shaft member rotated by a driving gear, which is rotated along with the operating ring, or a slider, which is driven by a rotating driving member which is rotated along with the operating ring to move linearly, is used.