The invention provides a multidirectional input device of a magnetic sensor which is difficult to damage. The device is provided with an operator (5) having a moving part (52) capable of sliding in a cavity part between an upper shell (2) and a lower shell (3) and arranged for holding a magnet (8), a magnetic sensor (113) arranged opposite to the moving part (52) for detecting the change of the magnetic field generated by the magnet (8), a flexible baseboard (11) used for mounting the magnetic sensor (113) and arranged on the lower surface side of the bottom wall of the lower shell (3), and amounting part (4) arranged under the lower shell (3) and the flexible baseboard (11) and used for integrating the upper shell (2) with the lower shell (3), wherein the mounting part (4) is provided with a base part (41) in butt joint with the lower surface of the lower shell (3) and elastic wrist parts (44a, 44b) connected to the base part (41), and at least the mounting part of the magnetic sensor (113) in the flexible baseboard (11) is elastically supported by the elastic wrist parts (44a, 44b).