Alcoholic beverages are collectively referred to as "jiu" in Chinese, containing alcohol (ethanol). Ethanol is the main component of alcoholic beverages and is one of the important indicators for measuring their quality. China is the country that first invented brewing in the world and is also a major consumer of alcoholic products, with consumption leading the world. Therefore, the rapid and accurate determination of ethanol content in alcoholic beverages is of great significance for ensuring their quality and protecting consumer health.