This train information management device is for managing train control information in the form of control command signals. The train information management device is provided with a central unit (10) that, when the train has come to a stop, determines the presence of a pantograph (7) inside an air section of the catenary by checking a measured onboard kilometerage against route information which includes the positions of air sections provided on the catenary, and that outputs a pantograph-lowering signal (DI-2) as train control information upon detecting the pantograph (7) being in the raised state on the basis of up/down state information output from the pantograph (7).