The increasing destruction to marine ecosystems and the related health issues, have attracted the sustained attention of international community in the context of ocean and coastal management. However, existing research focused more on the practical aspects, such as prevention and governance, rescue and treatment, as well as recovery and reconstruction. While the structural elements of psychological implication and practical utility of healthcare security, together with their relationship are urgently required to be explored in depth. This study consists by two studies. Experiment 1 collected relevant textual information using the keywords “marine crisis,” "healthcare," “marine health,” and “human health” through open coding, axial coding, and selective coding, in order to construct the theoretical model of “psychological implications-practical utility.” It generalized the elements of psychological implications and practical utility in marine crisis healthcare security and summarized these elements within the theoretical model. Experiment 2 explored the operation mechanism of each category in the “psychological implications-practical utility” model at four levels: holistic network, node network, local network, and network pathway. Results revealed the key pathway of the interaction between psychological implications and practical utility in a crisis. This study demonstrated that incorporating psychological implications and practical utility into the resilient planning of marine crisis healthcare security is essential. It proposed a dynamic relationship between psychology and potential behaviors, offering practical insights and guidance for effectively building a marine crisis healthcare security system. In terms of healthcare innovation, healthcare services, and healthcare management, this study provided insights and guidance for effectively constructing a marine crisis healthcare security system.