Abstract: As the key element for future information warfare, spatial target detection and sensing system provides crucial spatial early warning information for modern warfare. Facing the characteristics of miniaturization, constellation and mutation of the future spatial targets, the cloud-edge-terminal architecture is introduced into the construction design for the spatial target detection and sensing system in this paper. Firstly, the problems and system requirements of the current spatial target detection and sensing system are analyzed. Then, combing the new concept of the cloud-edge-terminal architecture, a new design method for spatial target detection and sensing system architecture is proposed. Considering the current situation of detection and sensing equipment, the system composed of cloud center, edge center and terminal node is designed reasonably, and combined with the process of space target detection, the system operation logical architecture of “two loops, one database, four elements” is designed. Finally, the advanced capabilities features of the proposed architecture are summarized.