Abstract: [Purpose/Significance] The establishment of government data openness mechanism can promote knowledge sharing in national economy, information technology and other fields, and provide theoretical reference and practical guidance for the government to open the public. [Method/Process] This paper builds a logical framework of government data openness mechanism based on three dimensions of government data content, object of government data utilization and government data open format, and uses the framework as a theory to guide the practice of opening government data, so as to improve the strategy and action of government data openness. [Results/Conclusion] As a part of the process of exploring open government, it is necessary to interact with practice to construct open government data system. According to feedback, we can improve the theory, measure performance and accept public evaluation, and improve the government data classification system.

Key words: open data, data security, openness mechanism, management mechanism