面向深空探测这类型号任务,提出一种基于知识推理的航天器自主故障诊断的智能方法,采取直接线性存储的知识库结构、主动监测事实更新并触发推理以及基于散列算法的事实管理三项关键技术,适用于航天器硬件处理能力和存储容量受限的应用环境.采用C语言在基于TSC695处理器的嵌入式系统上实现了该故障诊断方法,实验的结果表明该方法有效. In this paper, we propose an intelligent method for autonomous spacecraft fault diagnosis based on knowledge reasoning, take a knowledge base structure of direct linear storage, and actively monitor the factual update and trigger reasoning, and the fact management based on hash algorithm Which is suitable for spacecraft hardware processing power and limited storage capacity.It uses C language to realize this fault diagnosis method on embedded system based on TSC695 processor.The experimental results show that this method is effective.