During vehicle travelling with the motor travel priority mode where the vehicle is driven to travel prioritizing the motor travel after system startup, when the accumulated charge ratio SOC of the batteries becomes less than the threshold value Scd, which is set so that the accumulated charge ratio SOC reaches the threshold value Shv for shifting to the hybrid travel priority mode in the case that the vehicle is driven in the motor travel for the required time to warm up the catalyst, in the state that the temperature Tc of the catalyst for purifying the engine exhaust is less than the threshold value Tref which is predetermined as a lower limit temperature to activate the catalyst, the engine is started up and brought to the appropriate operation state to the catalyst warm-up and the vehicle is driven with the motor travel priority mode (S130 through S150).