体验经济时代，消费升级需求突出，文化与科学技术的深度融合，促进了沉浸式文化体验的快速发展。面对沉浸式文化体验项目过度依赖技术场景、内容单一、易于复制、延续性不强等现实问题，文章采用扎根理论的质性研究方法，结合现有文献，明确了“互动”在沉浸式文化体验中的重要作用，并揭示了沉浸式文化体验中互动设计的核心机制与实现路径。研究发现：沉浸式文化体验中，互动是不可或缺的因素，场景设定、情境打造、情感提炼、集体兴奋和意愿强化等五个环节是在沉浸式文化体验中实现互动设计的基础和前提，并分别从活动前准备、活动中升华、活动后延续三个方面提出了沉浸式文化体验中互动设计的实现路径及具体的操作建议。

In the era of experience economy, with the prominent demand for consumption upgrading and the deep integration of culture and science and technology, the rapid development of immersive cultural experience has been promoted. In view of the practical problems in the immersive cultural experience project, such as excessive reliance on technical scenes, single content, easy replication and weak continuity. Based on the qualitative research method of grounded theory and combined with the existing literature, this paper defines the important role of "interaction" in immersive cultural experience, and reveals the core mechanism and implementation path of interactive design in immersive cultural experience. The research finds that interaction is an indispensable factor in immersive cultural experience, the basis and premise of realizing "interaction" in immersive cultural experience include five links: scene setting, situation building, emotion refining, collective excitement and intention strengthening. In addition, this paper puts forward the realization path and specific operation suggestions of interactive design in immersive cultural experience from three aspects: preparation before activities, sublimation in activities and continuation after activities.