At present, the retail price of methanol fuel in northern China is mostly around 2000 yuan/ton. The retail price of liquefied gas is 6800 yuan/ton, and that of diesel oil is 8000 yuan/ton. In contrast, the economy of methanol fuel is very obvious. Moreover, this fuel can be stored, transported and used at normal temperature and pressure, without high-pressure steel cylinders, and can be sealed and stored in ordinary iron barrels or plastic barrels, which is convenient to use. In case of fire, it can be put out with water, there is no explosion danger, and gas poisoning will not be caused by air leakage.