To shift the automatic speed shift and manual speed shift of a transmission via the action of hand fingers in a single operation and to shift the speed stages of the transmission or shift the automatic transmission ranges of the transmission.

This transmission of a vehicle is provided with a manual/ automatic speed shift means 1 capable of being switched in a single operation and speed stage shift means 11, 12. When the manual/automatic speed shift means 1 is switched to the manual side, speed stages are upshifted or downshifted by the speed stage shift means 11, 12. When the manual/automatic speed shift means 1 is switched to the automatic side, transmission ranges are switched in sequence by the speed stage shift means 11, 12 via a control means 30.