The invention discloses an intelligent crushing system, comprising a crushing mechanism, a crushing motor, a feeding material conveying belt, a feeding motor, a vibrating screen, a discharging material conveying belt, a backflow conveying belt and a feeding control system, wherein the crushing motor is arranged to drive the crushing mechanism to rotate, the feeding material conveying belt is connected with a feeding hopper at the top of the crushing mechanism, the feeding motor is arranged to drive the feeding material conveying belt to rotate, the vibrating screen is connected with a material discharging end of the crushing mechanism, the discharging material conveying belt is connected with a lower material discharging opening of the vibrating screen, the backflow conveying belt is connected with an upper material discharging opening of the vibrating screen, the feeding control system comprises a speed regulator and a power meter, the speed regulator is used to regulate rotating speed of the feeding motor, the power meter is used to detect output power of the crushing motor, and a material discharging end of the backflow conveying belt is connected with a material feeding end of the feeding material conveying belt. The intelligent crushing system disclosed by the invention detects conveying power of the crushing motor in real time through the power meter, regulates the rotating speed of the feeding motor according to the detected conveying power so as to regulate the feeding speed, ensures the crushing motor to work under a set power, is favorable for increasing resource utilization rate, and ensures a high degree of uniformity of particle sizes of crushed waste steel.