The invention relates to the technical field of spraying devices, in particular to a spraying device for a circuit board, which comprises a rack, a mounting frame, a spraying mechanism, a feeding
assembly, an air inlet
system and a
control system, the spraying mechanism comprises a main body, a
nozzle and a splash guard; in the spraying process, atomized paint is blocked by the splash-proof cover and is attached to the inner wall of the splash-proof cover when escaping all around, the problem that in the spraying process of a spraying device in the prior art, the paint drifts away from a
nozzle and is attached to other areas, and consequently cleaning work is increased is solved, and the spraying efficiency is improved. And by arranging the protective film, the winding
assembly and the discharging
assembly, the protective film is automatically replaced, and the spraying efficiency is further improved. The protective film is folded to form the wrinkles, so that when the protective film is replaced, the
coating on the surface of the protective film is clamped by the wrinkles and then is rolled, the
coating slag is prevented from falling off from the protective film, and the
coating slag is further prevented from falling off from the protective film by setting the winding direction of the protective film.