The invention discloses a lifting self-discharging mechanism used for a full electric vehicle. The lifting self-discharging mechanism used for the full electric vehicle is simple in structure, high in efficiency, safe, reliable and suitable for the full electric vehicle. The lifting self-discharging mechanism used for the full electric vehicle comprises a vehicle frame, a cross beam, a motor, a mechanical driving box, a straight spur gear, a sector gear, a compartment, guide rail grooves, sliding blocks and tie bars, wherein the motor and the mechanical driving box are both fixedly installed on the cross beam at the rear of the vehicle frame, the output shaft of the motor is connected to an input shaft of the mechanical driving box, the straight spur gear is installed at one end of an output shaft of the mechanical driving box, and the sector gear is fixedly installed at the rear of a base plate of the compartment. A motive power source of the electric vehicle serves as a power source of a lifting mechanism, after the circuit is turned on, electric energy is converted into mechanical energy through the motor and is transmitted to the mechanical driving box, then the sector gear drives the compartment to rotate clockwise or anti-clockwise, and therefore lifting and reset of the compartment are achieved. The lifting self-discharging mechanism used for the full electric vehicle is easy to implement, enables a lifting process to be stable, can improve the reliability of the entire lifting process and lowers cost.