The invention discloses a disconnecting switch operating mechanism and a travel control device of a disconnecting switch, wherein the transmission ratio between a first gear and an output shaft of a motor is N times of the transmission ratio between a second gear and the output shaft of the motor; a controller is connected with a first travel switching circuit and a second travel switching circuit in a sampling mode through a logical operation unit which is used for conducting the operation of the logic 'and', so that when deviation happens to gear transmission, the trigger signal deviation generated on the second travel switch is only one Nth of the trigger signal deviation generated on a first travel switch, and the trigger signal emitted by a second travel switch is in charge of triggering; when a trigger segment in a trigger period of the first travel switch and a trigger segment in a trigger period of the second travel switch appear at the same time, through the judgment of the logic 'and', control over the trigger signal is started, so that the motor is made to stop working; therefore, the accuracy of the trigger signal is decided by the trigger segment of the trigger signal emitted by the second travel switch in the whole control process, the accuracy of control over the trigger signal is improved, and accurate control over motions of the disconnecting switch is realized.