在国家低空经济战略推进背景下，针对定线接驳（公共服务型）与“飞滴”出行（市场化服务型）两类差异化低空出行服务的用户接受影响因素与机理展开研究。通过改进技术接受-计划行为理论（TAM-TPB）整合模型，构建“技术-制度-认知”多维分析框架，基于问卷调查数据建立双场景结构方程模型进行实证检验。研究结果表明：定线接驳服务呈现“技术功能主导型”决策逻辑，技术信任既直接驱动使用意愿，又通过提升感知有用性和降低风险感知而间接促进接受度；而“飞滴”出行则遵循“情感体验主导型”决策路径，技术信任通过态度间接影响使用意向，用户决策更依赖感知行为控制与主观体验。研究进一步从用户决策机理出发，为制造商的技术研发方向、运营商的用户体验优化与政府监管部门的制度供给提供了差异化策略依据，为推动低空出行服务的产业实践提供了理论支撑与操作指引。

Against the backdrop of advancing national low-altitude economy strategies, this research examines the factors and mechanisms influencing user acceptance of two differentiated low-altitude air travel services: the fixed-route shuttle (public service type) and 'Feidi' (market-oriented service type). By refining the integrated Technology Acceptance Model–Theory of Planned Behavior (TAM–TPB) framework, a multidimensional "technology-institution-cognition" analytical framework was constructed and empirically validated using a dual-scenario structural equation modeling approach based on questionnaire survey data. The findings reveal that fixed-route shuttle services exhibit a technology-function-dominated decision-making logic, where technology trust not only directly drives usage intention but also indirectly enhances acceptance by improving perceived usefulness and reducing risk perception. In contrast, 'Feidi' services follow an experience-driven decision-making pathway, where technology trust indirectly influences usage intention through attitude, with user decisions relying more heavily on perceived behavioral control and subjective experience. Drawing from the underlying user decision mechanisms, differentiated strategic guidance is provided for manufacturers' technology development priorities, operators' user experience optimization, and regulatory authorities' institutional design, thereby offering theoretical foundation and operational direction for promoting the industrial application of low-altitude air travel services.