The invention relates to a driving device for washing machine, comprising inner drum, weave wheel set on the bottom of inner drum, motor and clutch, characterized in that motor is set on one side of the bottom of outer drum; a belt speed reduction which is that small belt wheel fixed on the output shaft of motor drives the big belt wheel on the input inner and outer shaft; a reduction gearbox which is provided with a driving gear connected with input inner shaft and a pair of follower gears mounted with driving gear and rotating in mutual reversal, and bevel gear mounted with bevel wheel ringon the back side of weave wheel is set on the output ends of two following gears. By motor-belt wheel-clutch-driving device for inner and outer driving shaft and inverter technology inner drum rotatesfrom low speed to high speed gradually. It helps to exert motor efficiency and decrease production cost. Service life and performance are improved by sealed reduction gearbox.