The development of fault diagnosis technology for spacecraft plays an important role in the successful completion of the flying mission .This paper briefly reviews the fault diagnosis technology for spacecrcoft , and it describes the challenges of fault diagnosis and development status of fault detection and isolation technology for spacecraft in China and abroad based on collecting and summarizing the types of spacecraft fault and the probability of fault occurrence .The progress of research and the main characteris-tics of the fault diagnosis methods are analyzed .The present situation of spacecraft fault diagnosis technol-ogy is summarized and the future development direction is prospected .%航天器故障诊断技术的发展对于航天任务的顺利完成起着至关重要的作用，本文对航天器故障诊断技术进行了简要的综述。在对航天器故障类型和故障发生概率收集归纳的基础上，阐述了故障诊断所面临的挑战以及国内外航天器故障检测与隔离技术的发展现状，分析了航天器故障诊断方法的研究进展并指出了各自的主要特点，总结了航天器故障诊断技术现状并对未来的发展方向进行了展望。
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