The present invention relates to a hybrid rolling stock in which an engine can be started by utilizing an output from a secondary battery. In the hybrid rolling stock, an engine (1) can be started without providing a special device by using a power converter (4) and an induction generator (2) normally used as a DC power supply as an inverter and an induction motor. An engine start judging section(93) for judging whether the engine can be started or not from the voltage of a secondary battery (6) and the number of revolutions of the engine (1) is provided, and the engine is started even if a secondary battery information monitoring section (10) detects an abnormality in the secondary battery (6) so long as the secondary battery voltage detected at a voltage detecting section (7) falls within a predetermined range.