为降低空间碎片撞击所带来的威胁,文章针对某载人航天器进行了空间碎片撞击风险分析,并设计了空间碎片专用防护结构,制定了轨道规避策略;同时针对重点设备进行钝化设计,并采用寿命末期有控离轨制动方案。以上措施可有效实现空间碎片减缓。 In order to reduce the threat of space debris impact, this paper analyzes the risk of space debris impact on a manned spacecraft and designs a special protective structure for space debris and establishes a track avoidance strategy. At the same time, aiming at the key equipment passivation design, And the end of life with a controlled derailment brake program. The above measures can effectively reduce the space debris.