An infant seat rocker includes a base member having a pair of rails that protrude generally vertically from the base member and extend a length of the base member, a front wall that protrudes at an angle from the front of the base member, at least one rear wall that protrudes at an angle from the rear of the base member, a motor that is positioned on the base member and a spring that attaches the motor to the infant seat. The infant seat is positioned on the base member and the rails, the front wall and at least one rear wall are capable of locating the infant seat on the base member while the motor is energized to produce and maintain a rocking motion in the infant seat.