VEHICLE-MOUNTED DEVICE OPERATION SYSTEM

A vehicle-mounted device operation system, includes: an operating part that is located in a vehicle cabin, and configured to be subjected to operation for manually operating a vehicle-mounted device; a sound collector that is located in the vehicle cabin, and configured to collect speech of an occupant; and a processor configured to determine whether a command to the vehicle-mounted device is included in a content of the speech of the occupant collected by the sound collector, activate the vehicle-mounted device according to the command, when the processor determines that the command to the vehicle-mounted device is included in the content of the speech of the occupant, and highlight the operating part for the vehicle-mounted device activated by the processor.