The invention relates to the technical field of paint spraying, in particular to a paint spraying line capable of recycling UV ink. The paint spraying line comprises a spraying mechanism, a conveyor belt, a recycling mechanism and a curing box body, wherein the spraying mechanism comprises a paint spraying box body, a ventilator, a paint spraying frame and a spray gun; the recycling mechanism comprises an ink pump, a filter box, an ink filter pipe, an ink receiving groove and an ink receiving hopper; and the curing box body comprises an ultraviolet lamp, a box body and an observation window. According to the paint spraying line, a workpiece is conveyed into the paint spraying box body through the conveyor belt, the spray gun on the paint spraying frame sprays the workpiece, and the ventilator is started at the same time to be used for exhausting harmful gas in the spraying process; and in the spraying process, the spray gun sprays the position outside the workpiece and is filtered by the ink filter pipe to flow into the ink receiving groove, redundant ink sprayed to the conveyor belt by the spray gun is collected by the ink receiving hopper and poured into the ink receiving groove,the ink in the ink receiving groove is pumped by the ink pump and conveyed to the filter box, the filter box filters the pumped ink through the ink pump for secondary use, the height is adjusted to spray different workpieces, the redundant ink can be recycled and reutilized, and the working efficiency is improved.