The utility model discloses a printing production line belongs to printing product production technical field, including loading attachment, printing device and dust collector, characterized by: loading attachment's upper portion is equipped with the material loading platform, the upper portion left side of material loading platform is equipped with the cylinder, the output of cylinder is equippedwith the work or material rest, the right side of material loading platform is equipped with conveyer belt no. 1, the upper portion of conveyer belt no. 1 is equipped with the mount, the inside of mount is equipped with spring beam no. 1, the lower extreme of spring beam no. 1 is equipped with the compressing roller, the left side of mount is equipped with the fixed block, it has the material loading depression bar to articulate on the fixed block, the lower extreme of material loading depression bar is equipped with the material loading compression roller, the right side of mount is equippedwith sensor no. 1. The utility model relates to a rationally, the part set up practical reasonable, degree of automation is high, production quality is good, the printing is efficient, can extensively be used for printing industry.