During the long duration manned space missions of the station, the excessive noise envi⁃ronment will harm the health of astronauts, and affect the work efficiency. Due to the fact that the e⁃quipment power of space station is big, the quantity of noise source is many, and the noise index is harsh, the noise control and design face many challenges. To meet the noise index, the acoustic fi⁃nite element method was adopted to establish the complicated vibration⁃acoustics coupling simulation model. By multi⁃condition simulation, the characteristic distribution of the low frequency noise level was obtained. The result showed that the noise level under the condition of vibration⁃acoustics cou⁃pling was obviously higher than that of the non⁃coupling condition. Meanwhile, the vibration⁃acous⁃tics coupling led to the significant differences of the noise distribution among the three astronaut sleeping areas. In addition, the effect of sound absorption and noise reduction was quite obvious in the high frequency band by pasting with the sound absorbing material on the sleeping area, but there was little effect on the low frequency band.%在空间站长期飞行中，持续、过度的噪声环境会危害航天员的身心健康，并影响工作效率。空间站设备功率大、噪声源数目多、噪声指标严苛，给噪声控制和设计带来很大的挑战。为确保舱段噪声指标满足要求，基于声学有限元方法，根据已掌握的噪声源频谱特性、舱段构型布局、设备安装方式等建立整舱复杂声振耦合精细化噪声仿真模型。对环控、热控及推进分系统等多种噪声源单独工作或同时工作时密封舱内的噪声进行仿真，得到舱内低频噪声水平特性分布。结果表明：声振耦合下舱内的总体噪声水平远高于不考虑声振耦合的情况，并导致三个航天员睡眠区头部的声压级分布差异较大。此外，睡眠区粘贴吸声材料后，对高频段的吸声降噪效果明显，对中频段有一定的降噪效果，但对低频段几乎不起作用。
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