Perforating machine capable of selecting hole patterns

The utility model belongs to the technical field of punching, and particularly relates to a hole-pattern-selectable punching machine which comprises a supporting seat, a plurality of positioning assemblies and an anti-deviation structure, each positioning assembly comprises a sliding block and a connecting block, each connecting block is fixedly connected to the front face of the corresponding sliding block, a connecting cavity is formed in each connecting block, connecting grooves are formed in the two sides of each connecting cavity, and each connecting groove is provided with an anti-deviation structure. A lead screw is rotationally connected into the connecting cavity, one end of the lead screw penetrates through the connecting block and extends to the outside of the connecting block, the lead screw is rotated through an arranged rotating button, so that the mounting plate and the two limiting blocks are driven to be separated from the original two limiting holes, and the connecting block drives the slidi