The invention provides a carbon fiber polymer defoaming vibration device and belongs to the technical field of defoaming of defoaming towers. The carbon fiber polymer defoaming vibration device is used for efficiently precipitating and breaking polyacrylonitrile stock solution air bubbles. The vibration device comprises a tank body, a material inlet, a cover-pressing device, multiple pneumatic devices, multiple ultrasonic wave generating devices and a material outlet. The material outlet and the cover-pressing device are arranged at the top of the tank body, and the material outlet is formed in the lower portion of the tank body. Each pneumatic device internally comprises a cam shaft, and vibration is formed through compressed air under a certain pressure. The pneumatic devices and the cam shafts are fixedly installed on the outer surface of the bottom of the tank body. The ultrasonic wave generating devices are fixedly installed inside the tank body and located at the bottom of the tank body. The vibration device has the advantages of improving the polyacrylonitrile stock solution defoaming efficiency and the like.