Safety protection structure of punching machine

The utility model discloses a safety protection structure of a punching machine, and belongs to the technical field of punching devices. A safety protection structure of a punching machine comprises a workbench, a punching assembly is arranged above the workbench in a supporting mode through a supporting column, the telescopic end of the punching assembly extends downwards to be provided with a pressing plate, and protective nets are detachably installed at the left end and the right end of the supporting column; a lifting door assembly is detachably installed at the front end of the supporting column. A telescopic pin assembly is arranged at the inner end of the lifting door assembly, and a pressing block corresponding to the telescopic pin assembly is arranged at the front end of the pressing plate. According to the utility model, the protective door plate synchronously ascends along with the pressing plate, so that an operator does not need to manually open the door; and moreover, compared with a conventio