Abstract: Propellant feed unit (PFU) is the main component of electric propulsion system (EPS), which plays a very important role in improving the overall performance of the system.The main properties of PFU in EPS are summarized.This paper mainly discusses the important progress made by advanced aerospace technology countries in the new generation of high-performance propellant managment component technology,miniaturization of propellant feed unit,light weight design and integration technology,and the application of new propellent feed technology.Some suggestions for expediting development step of China propellant feed technology for electric propulsion are provided.