The invention discloses a vibrating screening and separation mechanism of a copper crushing machine. The vibrating screening and separating mechanism of the copper crushing machine comprises a rack, an air rack, an adjusting plate, a first spring plate, an air suction port, a feeding port, a support frame, a second spring plate, a fan, an eccentric shaft, a screen, a pull rod, a first discharge port, a connecting rod, a chain, a second discharge port and a motor. The air inlet is arranged on the lower portion of the rack, the fan is arranged at the air inlet, the adjusting plate and the pull rod are both arranged on the middle portion of the rack, the first spring plate and the second spring plate are both arranged between the adjusting plate and the screen, and the first discharge port and the second discharge port are both arranged on the screen. The eccentric shaft is arranged on the adjusting plate, and the motor and the eccentric shaft form chain transmission through the chain and a chain wheel. One end of the connecting rod is connected with the eccentric shaft, and the other end of the connecting rod is connected with the screen. The feeding port is arranged on the eccentric shaft through the support frame, and the air suction port is arranged at the feeding port. The vibrating screening and separation mechanism of the copper crushing machine is compact in structure, reasonable in design, safe and reliable to use, high in screening and separation efficiency, small in labor intensity, thorough in separation and free of pollution.