Based on the analysis of characteristic of cast-in-situ concrete hollow floor components,the applicability of this kind of structure forms in underground engineering was discussed. The structure forms of cast-in-situ concrete hollow flat slab floor under large loading were not suitable in the seismic region. And for the civil air-defense engineering under explosive loading,the structure forms should not be adopted because of the existence of brittle failure and weak anti-penetration capability.%通过对现浇混凝土空心楼盖构件特性分析，论述了这种结构形式在地下工程中的适用性。承受大荷载现浇混凝土空心无梁楼盖结构形式在抗震地区不宜采用。对于承受爆炸荷载的人防工程由于会出现脆性破坏的情况和抗侵彻能力弱，不应采用。
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