To provide an electric lock driving device enabling electric locking and unlocking operations of two dead bolts independently by one motor, dispensing with temporary reverse rotation of the motor to return it to an initial position as in a conventional case, facilitating the control, and capable of prolonging service life.

This electric lock driving device enables both of electric locking and unlocking and mechanical locking and unlocking. A drive transmission means 2 consists of a sun gear 4, two planetary gears 5, 6 revolving by the sun gear 4, a link gear 8 for locking detachably meshing with the locking planetary gear 6, and a link gear 7 for unlocking detachably meshing with the unlocking planetary gear 5. The unlocking planetary gear 5 is meshed with the link gear 7 for unlocking by the rotation of the sun gear 4 in one direction to unlock the dead bolts 3a, 3b, and the locking planetary gear 6 is meshed with the link gear 8 for locking by the rotation of the sun gear 4 in the reverse direction to lock the dead bolts 3a, 3b.