Aiming at the dangerous features of firing, explosion, poison and strong causticity of liquid propellant. Adopt burning technology of liquid missile engine and use main design scheme based on incinerator. Construct the hardware and software platform of discardable liquid propellant destruction equipment. The application shows that the equipment could ensure high efficient, no environmental contamination and safe disposing course of discardable liquid propellant, and it has got good military and economical efficiency.