With rapid development of hydrogen energy industry in China, liquid hydrogen transportation mode with high energy storage density has great advantages over the current high-pressure gaseous transportation mode, and will become an important and efficient carrier to realize the large-scale development of hydrogen energy. The high economic efficiency of liquid hydrogen can be better applied to civil market with cost sensitivity. This paper describes the current global liquid hydrogen production capacity and distribution, summarizes the liquefaction methods and transportation technical characteristics of liquid mode, and analyzes the economic cost composition of the liquid hydrogen technology route. It is concluded that liquid mode as hydrogen carrier of large-scale development of hydrogen energy will be suitable for the development route of civil hydrogen energy in China. Suggestions are also put forward for the future development of hydrogen energy in China.