The objectives of this research were as follows: 1) To study, analyze, synthesize documents and researches related to the architecture of an information system for public relations via mobile application using in-depth user experience for proactive perception of information, 2) Design the architecture of an information system for public relations via mobile application using in-depth user experience for proactive perception of information, 3) Develop the architecture of an information system for public relations via mobile application using in-depth user experience for proactive perception of information, and 4) Study the results of evaluating the suitability of the architecture of an information system for public relations via mobile application using in-depth user experience for proactive perception of information. The samples used in the research were 20 experts in information system development from various institutions in higher education. The assessment results found the following: 1) The developed system architecture has four components: stakeholders, user experience process, output and feedback, 2) The results of the evaluation of the suitability of the developed system architecture found that (2.1) the assessment results of the suitability of the developed system architecture (aspect of integrated components) was appropriated at a high level (Mean=4.43, S.D.=0.67) (2.2) the assessment results of the suitability of the developed system architecture (issue by separated components) were appropriated at a high level (Mean=4.37, S.D.=0.80), and 3) The assessment results of the suitability in implementing the developed system architecture were appropriated at a high level (Mean=4.17, S.D.=0.74), respectively.