Abstract: Based on the composition and classification of the xenon feeding system, the traditional xenon feeding system and the advanced xenon feeding system are both sorted according to three types, i.e. mechanical regulation type, switch control type and proportional control type. The key technologies involved in the xenon feeding system such as modeling and simulation technology, fluid control component technology and system integration technology as well as their research status are briefed, and the development status and trend of the xenon feeding system are summarized. The differences between the domestic and international xenon feeding systems are analyzed, and the suggestions on development of the xenon feeding system in China are given. The xenon feeding system for space electric thruster is comprehensively reviewed for the first time in this paper, which has important reference value for the research on xenon feeding technology.

Key words: Space electric thruster, Electric propulsion system, Xenon feeding system, Pressure control, Flow control, Fluid control device