A mobile-terminal charging device comprising: a support plate whose front surface side is used as a mobile terminal placement portion; a charging coil that is movably disposed in a state of opposing the support plate on a rear surface side of the support plate; a driver that can move the charging coil on the rear surface side of the support plate; a controller that is connected to the charging coil and the driver; a memory that is connected to the controller; and a plurality of foreign object detection coils that are provided on the support plate and are connected to the controller, characterized in that: the memory stores a reference resonance frequency or a reference resonance voltage of each of the plurality of foreign object detection coils for each location where the charging coil is present, and the controller performs a safety operation during non-conduction of the charging coil in a case where a resonance frequency detected by one of the plurality of foreign object detection coils corresponding to a location where the charging coil is present is higher than the reference resonance frequency stored in the memory, or a resonance voltage detected by one of the plurality of foreign object detection coils corresponding to a location where the charging coil is present is lower than the reference resonance voltage stored in the memory. a support plate whose front surface side is used as a mobile terminal placement portion; a charging coil that is movably disposed in a state of opposing the support plate on a rear surface side of the support plate; a driver that can move the charging coil on the rear surface side of the support plate; a controller that is connected to the charging coil and the driver; a memory that is connected to the controller; and a plurality of foreign object detection coils that are provided on the support plate and are connected to the controller, characterized in that: the memory stores a reference resonance frequency or a reference resonance voltage of each of the plurality of foreign object detection coils for each location where the charging coil is present, and the controller performs a safety operation during non-conduction of the charging coil in a case where a resonance frequency detected by one of the plurality of foreign object detection coils corresponding to a location where the charging coil is present is higher than the reference resonance frequency stored in the memory, or a resonance voltage detected by one of the plurality of foreign object detection coils corresponding to a location where the charging coil is present is lower than the reference resonance voltage stored in the memory. the memory stores a reference resonance frequency or a reference resonance voltage of each of the plurality of foreign object detection coils for each location where the charging coil is present, and the controller performs a safety operation during non-conduction of the charging coil in a case where a resonance frequency detected by one of the plurality of foreign object detection coils corresponding to a location where the charging coil is present is higher than the reference resonance frequency stored in the memory, or a resonance voltage detected by one of the plurality of foreign object detection coils corresponding to a location where the charging coil is present is lower than the reference resonance voltage stored in the memory.