To quickly change a shift stage while suppressing shift shock.

When up-shifting is indicated with torque applied to an input shaft of an automatic transmission from an engine, a torque phase is performed by applying torque phase execution pressure Ptor to a clutch and a brake to be turned on and standing by (S130), and when the torque phase is completed, in a standing-by state at the torque phase execution pressure Ptor, by torque down of the engine, an inertia phase is started and the shift stage is changed (S140, S150). Thereby, compared with one that performs the inertia phase by increasing oil pressure applied to the clutch and the brake to be turned on, changing of the shift stage can be quickly performed while suppressing shift shock.