To provide an auxiliary lock mounting apparatus that can be mounted flexibly to a vending machine whose side structure is diversified in terms of decoration and functions without sacrificing airtight structures.

The auxiliary lock mounting apparatus of the vending machine has a lever consisting of one and the other side rods in an approximate L shape, and an auxiliary lock body is fitted to one side rod terminal section for supporting the terminal section of the other side rod stuck to a door surface. Additionally, the apparatus comprises a pedestal, where a lever fitting hole for moving the other side rod within a specific range in the direction of an axis center is punched; a turntable that can be rotated to the substrate while a pair of call-in bolts at a position symmetrical to the axis center projects in a rear perpendicular direction to the lever fitting hole axis center; and a scaleboard corresponding to the call-in bolts. Then, the apparatus is stuck to the body side of the vending machine by allowing the call-in bolt at the outside to oppose the scaleboard in the inside, thus retaining each call-in bolt in upper/lower perpendicular positions regardless of the displacement of the other side rod by the rotation of the turntable.