Abstract: The high precision spacecraft platform system is an important carrier and plays a significant role in the successful implementation of a space gravitational wave detection mission. In this paper, frontier researches on high-precision spacecraft platform systems were reviewed and summarized. The inertial sensor reference of spacecraft platform, micro-thrust actuator, drag-free attitude control technology of spacecraft platform, formation design and control of spacecraft system were discussed. The recent relevant research progress of spacecraft platform system used for space gravitational wave detection was summarized and discussed, covering both domestic and international frontier research hotspots, focusing on key research issues of space gravitational wave detection spacecraft platform system design. A prospect on the development of spacecraft platform system was proposed, including key payloads, orbit and attitude control strategies, formation configuration design, etc