The work aims to review the research on cross-reality interaction and synergetic perception in the context of XR experience, and to analyze and propose methods and design suggestions to enhance audience experience. Based on literature review and case study methodology, the bridging and crossing of XR space, audience interaction and emotional perception in immersive media were mainly analyzed, and relevant interaction frameworks and design prototypes for application in specific cases were proposed. The results showed that XR technology significantly enhanced the interaction experience between the audience and the virtual environment, while the integration of biofeedback technology provided a new means for the collaborative perception of the audience's emotions. Cross-reality interaction and multi-person emotion perception feedback in immersive experiences is promising, but it is still necessary to continuously optimize the interaction design and enhance the audience experience, so as to promote the social sustainable development of immersive media experiences, and thus to promote the innovation of the digital creative industry.