Vehicle control device, and control method thereof

It includes a first power transmission mechanism disposed between the driving source and the driving wheels, is disposed in the first power transmission mechanism in series, and a second power transmission mechanism for shifting between the input shaft and the output shaft and a vehicle control device for controlling the vehicle, a slip detecting means for slipping the first power transmission mechanism to detect whether occurring, if the occurrence of the slip is detected by the slip detecting means, second power transmission and a shift means for reducing the slip thereby shifting mechanism.