The invention relates to a control device for vehicle when vehicle is varying speed, providing a pedal speed-varying function when the transmission gear is not feeling the break of the drive force. At the same time of controlling the speed according to the transmission ratio of the speed varying by the planet gear mechanism when the vehicle is in a low speed, and controlling the speed according to the meshed transmission mechanism when the vehicle is in the high speed; when controlling the speed according to the meshed transmission mechanism, the invention controls the engine generating torque for the internal-combustion engine when processing the automated drive and the automated clutch to drive and control the electric node air valve.