The invention discloses a roll film coating device for photovoltaic glass coated with an AR coating liquid, which comprises a frame, a support roller is arranged on the upper end of the frame, and the upper end of the support roller is provided with a glass to be processed, and the frame is The middle part is provided with a column, a slide rail is arranged at the upper end of the column, and a plurality of movable bearing seats are installed in the slide rail. The column is driven by a screw to move the movable bearing seat, and the column passes left to right through the movable bearing. The seat is provided with a front roller, a rear roller and a compaction roller in this order. The coating device designed in the present invention can enhance the uniformity of glue coverage and prevent the local generation of droplets, and is suitable for the mass production of laminated photovoltaic glass. The increase of production efficiency and production quality has high practical value.