Anti-counterfeit printing device for modulating printed matter

The utility model discloses an anti-counterfeit printing device for modulated printed matter, and relates to the technical field related to printing, the anti-counterfeit printing device for modulated printed matter comprises a shell, a first rotating rod and a second rotating rod are rotatably connected to the interior of the shell, and a conveying belt is rotatably connected to the outer side of the first rotating rod and the outer side of the second rotating rod; the upper side of the shell is fixedly connected with a printing machine body and a fixing shell, an anti-counterfeiting mechanism is arranged in the fixing shell, the problem that when part of existing printing machines conduct printing on paper, anti-counterfeiting marks cannot be printed is solved, the printing machine body can conduct printing on the paper needing to be printed, the anti-counterfeiting mechanism is arranged in the fixing shell, and therefore the anti-counterfeiting effect is improved. The fixing shell can fix and connect the a