To obtain a state display unit and a state display method by which the user can quickly check the state of equipment mounted on a vehicle.

Equipment 3-5 mounted on a train outputs state information to an operation means 2 and a mobile information control system 10 outputs the operational information (route section information, diagram information, etc.) of the train thereto by a transmission line 6. Moreover, the operation means 2 and the indication means 1 transmit information, and the indication means 1 receives only the state information of the equipment geared to the route section in running through the operation means 2 via the transmission line 6.