The invention provides a lithium battery PE bagging device, which comprises a frame, wherein a film discharging mechanism, a vacuum pumping mechanism and a moving material receiving device are arranged in the frame, wherein a material moving device is provided with a carrier, and the carrier is internally provided with a pull-down mechanism, a heat sealing mechanism, a cutting mechanism and an opening mechanism; the device can achieve the integral operation of the bagging and sealing the material, the PE film is pulled down by the pull-down mechanism, the bottom is sealed by the sealing mechanism, the cutting mechanism cuts the upper part, the moving material receiving device moves the carrier, the opening mechanism opens the PE film bag, and the material enters the film bag, the vacuum pumping mechanism carries out vacuum pumping, and the heat sealing mechanism seals the film bag, the integrated and automatic operations greatly improve the working efficiency.