Abstract: Based on the research of the residual propellant gauging methods in 11th Fiveyears Plan, the application conditions such as propellant gauging methods of the gas injection, ultrasonic flowmeter, accelerometer, thermal, PVT(pressure, volume, temperature) and bookkeeping are analyzed. In this paper, the application of    propellant gauging methods in each period of the spacecraft life is researched, and three typical combinational applications of these methods are brought up.

Key words: spacecraft propulsion system, propellant gauging, application research