Carbon dioxide and other greenhouse gases from aviation activities grow every year. The European even asks for the civilian flights carbon tax from civilian flights, and the requirements of European airworthiness standards for aviation emissions are increasing higher and higher. In order to meet global competition, this article introduces and discusses the economic feasibility and possible problems of liquefied natural gas(LNG) as aviation fuel from the requirements of carbon dioxide emission, integrated to explore new aviation fuels abroad. A new idea is introduced for the development of the domestic aviation fuel.