TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The mixed solution-microparticles have average diameter of 0.8-1.5 mu m. The hydrogen mixed gas comprises hydrogen, carbon monoxide, carbon dioxide and methane.    TECHNOLOGY FOCUS - MECHANICAL ENGINEERING - Preferred Arrangement: The one end of guide pipe is provided with a gas inlet which guides the air capable of mixing and oxidizing with mixed solution-microparticles, and the introduced air is used to push the mixed solution-microparticles to flow toward the plasma heater. The plasma heater is low-temperature plasma heater. The average temperature in the heating zone of plasma heater is 180-230 degrees C. The temperature of low-temperature hydrogen mixed gas produced in plasma heater is 15-25 degrees C. The position of guide pipe provided with gas inlet is a buffer portion which provides the mixed solution-microparticles to mix with the air introduced from the gas inlet. The lower end of guide pipe is provided with a reaction portion, and the lower end of the reaction portion is provided with an atomizer. The reaction portion is connected with the liquid storage barrel for storing the methanol mixed solution by guide pipe. The one end of reaction portion of guide pipe is provided with a liquid level sensor. The interior of guide pipe is provided with a guide unit which guides the oxidized and heated mixed solution-microparticles to the heating zone of plasma heater. The lower end of guide unit is provided with a refluxing hole, and the several guide pipes are connected in parallel. The liquid storage barrel is provided with a controlling switch for controlling chip card. The plasma heater is formed by connecting a spark plug with a high-voltage capacitor in parallel, and has a primary coil and a secondary coil to match with the sparkle plug without resistance as plasma output electrode by boosting transformer with extremely low resistance and extremely low resistance inductance, in order to improve the flowing rate of the current. The plasma heater has low-voltage capacitor with microfarad to store energy, high-voltage capacitor with microfarad to nanofarad of 20-500 KV, and sparkle plug. The plasma heater provides the electric power of primary coil in short time. The atomizer is ultrasonic wave atomizer or oscillating atomizer. The hydrogen mixed gas supplying device further has a controller which controls the movement of atomizer and plasma heater.