An operation mechanism for a dual-power automatic transfer switch, the dual-power automatic transfer switch being configured to switch between a dual-off position, a first power-on position and a second power-on position, the operation mechanism comprises: a frame ; a rotating disk , rotatably mounted to the frame ; a first elastic member , wherein one end of the first elastic member is configured to abut against the rotating disk , and the other end of the first elastic member is mounted to the frame ; a driving disk , configured to rotate in cooperation with the rotating disk when the rotating disk rotates; a driving rod , mounted on the driving disk and configured to rotate together with the driving disk and connected with a movable contact bracket, wherein at the dual-off position of the dual-power automatic transfer switch, when the rotating disk rotates in a first direction, the first elastic member deforms to store energy, and after the rotating disk rotates by a predetermined angle, the rotating disk abuts against the driving disk so that the driving disk also rotates in the first direction, then the first elastic member passes through a "dead point", and the rotating disk and the driving disk continue to rotate in the first direction under an action of the first elastic member , so that the driving rod rotates in the first direction and drive the movable contact bracket to rotate, so as to realize a switching of the dual-power automatic transfer switch from the dual-off position to the first power-on position, characterized in that the rotating disk comprises a transmission disk , wherein when the rotating disk rotates, the transmission disk is configured to, after rotating by a predetermined angle, cooperate with the driving disk to transmit a rotation of the rotating disk to the driving disk . a frame ; a rotating disk , rotatably mounted to the frame ; a first elastic member , wherein one end of the first elastic member is configured to abut against the rotating disk , and the other end of the first elastic member is mounted to the frame ; a driving disk , configured to rotate in cooperation with the rotating disk when the rotating disk rotates; a driving rod , mounted on the driving disk and configured to rotate together with the driving disk and connected with a movable contact bracket, wherein at the dual-off position of the dual-power automatic transfer switch, when the rotating disk rotates in a first direction, the first elastic member deforms to store energy, and after the rotating disk rotates by a predetermined angle, the rotating disk abuts against the driving disk so that the driving disk also rotates in the first direction, then the first elastic member passes through a "dead point", and the rotating disk and the driving disk continue to rotate in the first direction under an action of the first elastic member , so that the driving rod rotates in the first direction and drive the movable contact bracket to rotate, so as to realize a switching of the dual-power automatic transfer switch from the dual-off position to the first power-on position, characterized in that the rotating disk comprises a transmission disk , wherein when the rotating disk rotates, the transmission disk is configured to, after rotating by a predetermined angle, cooperate with the driving disk to transmit a rotation of the rotating disk to the driving disk . <EOS>