The utility model discloses a packing box spraying equipment, include: support, collecting tank, gyro wheel, spray room and control box, the collecting tank sets up in the support top, the gyro wheel sets up in the upper portion of collecting tank, and the spray room sets up in the gyro wheel top, evenly be provided with a plurality of shower nozzles and water pipe in the spray room, the spray room comprises two blocks of curb plates and a roof, and the front and back end of spray room is the opening setting, and these two opening departments are the feed inlet, and a department is the discharge gate, the below of collecting tank is provided with a liquid reserve tank for liquid medium in the collecting tank can flow in in the liquid reserve tank, pass through water piping connection between liquid reserve tank and the shower nozzle, the gyro wheel passes through motor drive. In this way, the utility model discloses can carry out the spraying to EPS board surface omnidirectional, not exist to leak and spout the dead angle, and the spraying need not dry and directly to toast, improve production efficiency.