The invention discloses a paint spraying device for a car steel plate. The paint spraying device for the car steel plate comprises a paint spraying disc, a plate fixing frame, a visible sealing door, absorbing discs, a side plate, a base, a paint feeding pipe, a burning furnace, an electric ring, a rotating disc, a spraying frame, a first telescopic column, a universal ball, a spraying head, a spraying hole, an electromagnetic adsorbing plate, a second telescopic column, an electricity connecting pipe, a third telescopic column and an absorbing and sending plate. The paint spraying device for the car steel plate has the beneficial effects that the paint spraying device adopts rotating type paint spraying design, paint spraying operation is conducted, meanwhile, the second telescopic column on the plate fixing frame also drives the steel plate to rotate, the second telescopic column is matched with the universal ball on the spraying frame to make the praying head to swing in any direction, paint spraying of the paint spraying device on the car steel plate is more comprehensive and uniform, the high quality and high efficiency of paint spraying are ensured, the multiple absorbing discs absorbs residual paint spraying particles, the residual paint spraying particles are absorbed and sent into the burning furnace for conducting burning purification through the paint feeding pipe, threat of the paint spraying particles on fitness of human bodies is prevented, the safety and environmental protection property of using the paint spraying device are ensured, the paint spraying device is convenient to operate, and components are flexibly connected.