Fast-paced life such as fast development of science and technology, fast logistics, fast brushing, fast walking, and fast takeout is becoming more and more common. Releasing pressure and how to use and design tourism to heal people’s physical and mental health has become a research hotspot. In recent years, ‘lying down young people’ have begun to seek ways and means to relieve stress based on the perspective of strain. Emotional regulation and tourism healing have become important means for them to adapt to the fast era and maintain their perception of reality. The idea of ‘lying down’ to adjust their mentality, relax their mood and release pressure has become the voice of most young people, but few studies have focused on the internal relationship between lazy people’s mentality and slow-paced immersion healing. Based on the perspective of immersion theory, this paper analyzes the characteristics of positive emotions and negative emotions by using laboratory experiments, network survey experiments and online questionnaire experiments, and explores how the interaction between lying down mentality and positive emotions affects positive healing in the tourism environment, as well as the potential mechanism between lying down mentality and positive healing. The results show that: First, in the tourism environment, the interaction between lying down mentality and positive emotions affects positive healing. Specifically, for non-positive individuals, lying flat mentality significantly affects positive healing. Second, for tourists with non-positive emotional characteristics, the influence of lying flat on positive healing is regulated by the immersion perception in the tourism environment. Thirdly, after several months of the novel coronavirus epidemic, for negative individuals, the influence of lying down mentality on positive healing has both direct and indirect effects through the mediation of immersion perception. This study not only reveals the direct and indirect mechanism between lying down mentality and positive healing, but also provides a useful supplement for tourism healing, emotion regulation and tourism behavior research. Moreover, it provides feasible suggestions on how different tourism modes or health care modes can better promote the positive healing of non-positive emotional groups and how to better enhance the immersion experience and positive healing of tourists.