Ethanol-based fuel is a type of fuel primarily composed of alcohol substances, such as methanol, ethanol, butanol, etc. It exists in either liquid or solid form. It is also a form of biomass energy, like nuclear, solar, wind, and hydro energy, and is actively promoted as an environmentally friendly and clean energy source. In the face of the depletion of fossil fuels, ethanol-based fuel holds potential as a new alternative energy.