A swing bolt lock includes a swing post, a cam dog, and an electric device cooperative with a lock bolt. The electric device includes a motor, a slider connected to a rotating shaft of the motor. Without an unlock authorization, the slider is situated in the space at an end of a sliding slot and abutted against the cam dog to prevent the cam dog from moving towards the space at the end of the sliding slot, so as to prevent the lock bolt from entering into the lock housing. With an unlock authorization, the slider is driven by the motor and released from the abutment of the cam dog, and the cam dog is driven by the lock bolt and swing post to enter into the space at the end of the sliding slot so as to release the locking of the lock bolt from turning into the lock housing.