A vehicle-mounted equipment operation support system include: a vehicle-mounted equipment operating device including a contact operating surface allowing an operator to perform a contact operation with a finger when operating or stopping a vehicle-mounted equipment, and an operation mode detector detecting an operation mode of the operator with respect to an operation unit, and in which the contact operating surface is arranged at a position closer to a vehicle front side than a steering wheel and enables an operation of the operator without taking off a hand from the steering wheel and a plurality of contact operation modes are assigned to the contact operating surface; a display device capable of displaying operation-related information relating to the operation of the operator; and a controller capable of performing display control of the operation-related information on the display device based on an output signal of the operation mode detector.