The invention relates to a filmed plate production line which comprises an uncoiling machine, a sewing machine, a flattening machine, a tightening machine I, a front storage rack, a tightening machine II, a front processor, a thermal flashing machine, a coating machine, a moisture drying machine, a cold flashing machine, a tightening machine III, a centering machine, a primary coating machine, a primary coating curing furnace, a PVC (Polyvinyl Chloride) filming guide machine, a PVC filming machine, a fine coating compulsive cooling machine, a wiping centering machine, a tightening machine IV, a protecting film coating machine, a rear storage rack, a tightening machine V and a coiling machine which are densely arranged in sequence. The filmed plate production line is characterized by further comprising a film trimming machine, wherein the film trimming machine is arranged between the protecting film coating machine and the rear storage rack. The filmed plate production line has the advantages that redundant films on two sides of a filmed metal plate in the production line can be cut off, the time and the labor are saved, and the use reliability is high.