Progress and prospect of research on controlled ecological life support technique

Controlled ecological life support system (CELSS) is an effective way to guarantee the survival of astronauts for the long-term manned deep space exploration and the settlement on extraterrestrial planets. CELSS can provide almost all the most important life-sustaining materials by the continuous regeneration and self-cycle supply, such as food, oxygen and water, etc. In this paper, the basic developmental history and the currently important research progress of CELSS are expounded, and the main technical challenges and future countermeasures are put forward too. This review is aimed at laying a reference for the development and earlier application of CELSS in the future.