Manned Space Station System is designed for the development and building of China’s Tiangong Space Station, mainly comprised of Core Capsule, Experiment Capsule I and Experiment Capsule II, with the aim of building reliable operating space station, and providing long-term support for the onboard healthy living and efficient work for the astronauts. Together with other systems, it can guarantee the safety of astronauts during their visits to space stations, and also provide essential conditions for carrying out multi-disciplinary space scientific experiments.