太空碎片是指人类的太空活动过程中遗留在太空的废弃物 .从航天飞机的飞行实践和国际空间站为时不长的飞行记录来看 ,太空碎片的问题已经不容忽视了 ,特别是载人航天 ,随着我国载人航天技术的突破 ,长期的载人航天势在必行 ,太空碎片的防护研究也应及早进行 .太空碎片对所有的 Space debris refers to the waste left behind by humans in the course of space activities. According to the space shuttle’s flying practice and the long-term flight record of the International Space Station, the problem of space debris cannot be ignored, especially manned spaceflight. With the breakthrough of China’s manned space technology, long-term manned space vehicles are imperative, and space debris protection research should be conducted as soon as possible.