目的 针对经济舱乘客因长时间乘坐飞机引起的亚健康问题，优化飞机经济舱座椅造型安全设计方法，为飞机经济舱座椅设计实践提供理论支撑。方法 将FRAM应用于优化飞机经济舱座椅的造型安全设计。通过识别并描述乘客航行的完整流程，构建FRAM功能网络图，利用各节点间的链接关系识别功能共振可能性，再结合AHP层次分析法计算不安全因素权重，并参考脑电实验结果进行优化设计。结果 基于该方法指导经济舱座椅造型安全设计实践，并通过虚拟仿真模拟实验验证座椅优化方案的可行性。结论 将FRAM应用于经济舱座椅前期造型安全设计，能够显著提升经济舱座椅设计的科学性与实用性，确保乘客飞行安全，并提供更舒适的飞行体验。

In order to address the sub-health issues caused by the prolonged air travel, the work aims to optimize the safety design method of airplane economy class seat modeling, providing theoretical support for practical design applications of airplane economy class seat. The Functional Resonance Analysis Method (FRAM) was employed to improve the safety design of economy class seat modeling. Through the whole process of identifying and describing the passengers' journey, a FRAM functional network diagram was established, and the functional resonance possibilities were analyzed based on the interconnections between nodes. The Analytic Hierarchy Process (AHP) was then applied to calculate the weights of unsafe factors, which were further combined with results from electroencephalogram (EEG) experiments to refine the design. Finally, the safety design practice of economy class seats was guided based on this method and virtual simulation experiments were conducted to verify the feasibility of the optimized design. By incorporating FRAM into the early-stage safety design of economy class seat modeling, this study enhances the scientific and practical aspects of seat design, ensuring passengers' safety while delivering a more comfortable flight experience.