Based on the deep integration of self-media technology empowerment and religious cultural communication, this study systematically analyzes the ethical dilemma and governance path of religious communication in the digital era. The study finds that the openness and low threshold characteristics of self-media platforms lead to ethical anomie phenomena such as the dissolution of authenticity, frequent privacy infringement, infiltration of extremist thoughts, and lack of social responsibility in the dissemination of religious information. By constructing a four-dimensional analytical framework of " technology-subject-system- audience ", it is revealed that the root cause of the problem lies in the conflict between technical logic and humanistic values, the structural imbalance of communication subject literacy, the lag of the regulatory system and the audience's cognition The "sound wall effect". Based on comparative research, this paper proposes ethical norms with "authenticity, respect, and publicity" as the core, and constructs a four-dimensional normative system including legal regulation, industry self-discipline, technical governance, and education guidance, so as to provide a theoretical reference and practical path for the ethical construction of religious and cultural communication in the digital age.