The invention discloses a supercritical steam collision material thermal decomposition condensation reduction device, which is mainly composed of a molten salt bath, a combustion chamber, a flue gas tank, an air preheating tank, a combustion engine, a fuel tank, a waste heat recovery tank, a high pressure plunger pump, a high pressure spraying device, a steam generator, a first steam coil a secondsteam coil, a steam header, a sub-cylinder, a steam collider, a first material thermal decomposition coil, a second material thermal decomposition coil, a condensation reduction bed, a conveyor, a first wind turbine, a second wind turbine, a delivery pipe, a first cooling tower, a second cooling tower and the like. The advantages of the supercritical steam collision material thermal decompositioncondensation reduction device include: 1. superheated steam is produced instantaneously, and the heat efficiency is very high; 2. steam temperature and pressure can be adjusted alone; 3. multi-stagewaste heat recovery can be made, and smoke exhaust temperature is low; 4. any limescale and sewage can't be generated, and no exhaust gas can be discharged; 5. in material thermal decomposition, the supercritical steam collision material thermal decomposition condensation reduction device is energy-saving and efficient, and the decomposition is adequate; 6. the device has multiple use, and the industrial process is integrated.