Micro particles of nebulized methanol-water solution was led into the plasma and heated within the micro-plasma methanol-water reforming, after it has been treated by ultrasonic mist maker by using the energy produced by the spark plug gap. Thanks to these micro particles, contact area of chemical reaction was dozens times enlarged, thus displayed fast reaction. Transference of plasma energy generated ions, electrons, neutrons, and free radicals which accelerated decomposition reaction of methanol and water molecules and then combined to form gases of hydrogen, carbon monoxide, carbon dioxide, and methane.The results of experiments of plasma generator showed that the equipment of plasma methanol reformer performed the highest spark voltage value of 4kV and higher content of hydrogen of about 10.83% with the setting of 5mm spark plug gap, 40kV-500pF of high-voltage capacitor, and methanol-water solution of 83% concentration.