The invention discloses an intelligent steel scrap cleaning and magnetic separating device, which comprises a bottom plate. A power supply is fixedly arranged on the left end of an upper surface of the bottom plate; support legs are fixedly arranged on the left side of the power supply; a conveyor belt is fixedly arranged on the top ends of the support legs; electromotors are fixedly arranged on two ends in the conveyor belt; an object stage is fixedly arranged in the middle of the support legs; an electromagnet is fixedly arranged on the right end of an upper surface of the object stage; support pillars are fixedly arranged on the right side of the upper surface of the bottom plate; a top plate is fixedly arranged on the top ends of the support pillars; a feed inlet is fixedly formed in the left end of an upper surface of the top plate; an air sucking pump is fixedly arranged in the middle of the top plate; an air holding pipe is fixedly arranged on a left surface of the air sucking pump; a button is fixedly arranged on the lower part of an upper surface of a control console; a processor is fixedly arranged in the control console; and the power supply, the air sucking pump, the electromagnet, a display screen, the button, an electric cleanser spraying bottle and the electromotors are electrically connected with the processor. The intelligent steel scrap cleaning and magnetic separating device can well achieve the aims on cleaning and magnetically separating steel scraps.