To provide the driving device of a hybrid vehicle in which traveling only by an internal combustion engine can be performed, and efficiency of a high ratio side is improved, in the driving device of the hybrid vehicle including the internal combustion engine and at least one electric rotating machine.

The driving device of the hybrid vehicle includes: a first planetary gear mechanism 24 of a double pinion type in which the sun gear is connected to an input shaft 16 connected to the internal combustion engine (Eg) 12; a second planetary gear mechanism 26 of a single pinion type to which a carrier is connected; a deceleration mechanism (Gr) in which rotation of the input shaft is decelerated and it can be transmitted to the carrier of the first planetary gear mechanism 24; a clutch (C4) 56 disconnecting/connecting the carrier of the first planetary gear mechanism and the sun gear of the second planetary gear mechanism; and a clutch (C3) 54 disconnecting/connecting ring gears of the first and second planetary gear mechanisms, and the ring gear of the second planetary gear mechanism is connected to an output shaft 22, and an electric rotating machine (G) 14 is connected to the carrier of the first planetary gear mechanism.