The utility model belongs to the technical field of the corrugated paper production facility, a rotary die -cutting machine is disclosed for it can not get rid of waste paper automatically and lead to the problem that production efficiency is low to solve rotary die -cutting machine among the prior art. The utility model discloses an organism sets up a cutting roller section of thick bamboo on, install the masterplate on being located the cutting roller section of thick bamboo of upside, installs a plurality of cutting knifes on the masterplate, installs the edge bearing on being located the cutting roller section of thick bamboo of downside, still installs a set of relative motion's the useless roller that goes on the organism, goes useless roller to install on the organism of the output of a cutting roller section of thick bamboo, go useless roller to include roller and lower roller, install on the roller down with cutting knife quantity and shape homogeneous phase with remove useless sword, the position of the sword that goes to give up corresponds with the position of cutting knife one by one each other, each length of going useless sword to extend lower roller is greater than the length that corresponding cutting knife extends the masterplate, and each overall dimension who removes useless sword all is lighter than the overall dimension of cutting knife corresponding with it.