The utility model discloses an auxiliary switch linkage structure. The left end of the pull bar of an auxiliary switch is hinged to the left part of the upper edge of the driving disc of the auxiliary switch through a fixing shaft pin; the right end of the pull bar of the auxiliary switch is provided with a long round hole; the right end of an isolation pull bar is provided with a round hole; and a pull bar shaft pin simultaneously goes through the long round hole and the round hole so as to hinge the isolation pull bar with the pull bar of the auxiliary switch. The auxiliary switch linkage structure has the characteristics of simple structure, safety, reliability, and good linkage effect.