An overview of the development of foreign military space situational awareness systems in 2023 is presented to analyze the annual development in the field from seven specific perspectives:threat objects,system integration,capability upgrades,technological innovation and operational applications.A forward-looking perspective on future development trends is provided.It is evident that with the large-scale development of low-earth orbit constellations,the space environment will become increasingly complex and congested.To address this challenge,it is needed to fully integrate existing radar and electro-optical sensor equipment,enhance data transmission and information fusion capabilities,strengthen the ability to discern the intentions of threatening targets,develop new deep space exploration methods,and comprehensively upgrade space situational awareness capabilities.