The basic theory of hybrid FE-SEA method was reviewed and the FE-SEA model of the complex cylindri- cal structure was built in this study. The coupling loss factor of the model was modified by utilizing the FEM-BEM method. Moreover, the sound radiation characteristics of such structures under the white noise excitation were pre- dicted. The sound pressure level in the sound cavity of complex cylindrical structure was measured in the anechoic room under the acoustic excitation. Meanwhile, the model was simulated and the results show well agreement with the experimental data. This method, which modifies the coupling loss factor using FEM-BEM, improves the predic- tion precision and reduces the absolute error to less than 5 dB within intermediate frequency region.%阐述了FE-SEA混合方法基本理论,建立了圆柱结构FE-SEA混合方法模型,利用FEM-BEM方法对模型中的耦合损耗因子给予修正。在白噪声激励条件下,预测了复杂圆柱结构辐射声场。在模拟声激励及力激励条件下完成了飞机舱段内声场的实验测量,同时使用仿真模型进行腔内噪声预测,并与实验结果进行对比。结果表明：使用FEM-BEM方法修正耦合损耗因子,可以提高预测精度,使预测结果在中频范围内的绝对误差小于5 dB。
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