A portable cathode copper lifting device is disclosed, comprising a gantry frame, a driving motor, a rechargeable power supply device, a motor control box, a steel wire rope drum, a steel wire rope and a sling. The driving motor, the rechargeable power supply device and the motor control box are fixed to the gantry frame. The rechargeable power supply device is electrically connected to the motor control box. The motor control box is connected to the driving motor to control the operation of the driving motor and provide power to the driving motor. The steel wire rope drum is driven connected to the output end of the driving motor, and the steel wire rope is wound on the steel wire rope drum. One end of the steel wire rope is fixedly connected to the sling. The sling is disposed in the gantry frame, and the steel wire rope can pull the sling up and down in the gantry frame.