Abstract: Firstly, this paper defines the definition and research scope of intelligent space system, and investigates the development of foreign intelligent space system under the three core characteristics of intelligent information extraction, autonomous task planning and intelligent information interconnection; Then, the development of intelligent space system in China under these three characteristics is compared and investigated, and the scientific problems existing in the intelligent space system are analyzed. Finally, the development trend of key technologies of intelligent space system in the future is proposed.

Key words: intelligent space systems, intelligent information extraction, autonomous task planning, intelligent information interconnection