Introduction: Students are considered as the main human resources of any society and attention to their health and health promotion is an investment for the future. In the present study, the aim was to make a comparative comparison of the primary school health educations in Iran, South Korea and Japan. Methods: This research is applied in purpose and descriptive-analytical method based on the method of comparative studies in education according to the George Brady's view. According to this, the collected data were analyzed in four stages including descriptive, interpretation, adjacency and comparison. To collect research data, an extensive search including English and Persian studies was conducted from 2005 to 2020 using valid databases and citations such as PubMed, Web of Science, Scopus, Google Scholar, WHO and Science Direct. Sampling was done selectively and primary health education in Iran, Japan and South Korea were reviewed and compared. According to the basic conceptual model, primary school health education was studied in the components of physical, mental and social health education. Results: In terms of mental health, bicultural acceptance, family relationships, parenting style,In terms of physical health, organized sports participation, active behaviors in school, adhere to diet, balance and agility, flexibility, muscle strength, endurance,in the social dimension, security, cohesion, empowerment and social support are among the different types of health education between Iran and the other two countries. Conclusions: In Iran, less attention has been paid to the components of primary school health education in all three dimensions of social, physical and mental health and needs to replace the different components mentioned in the research findings in the primary school health education system and the school health educators’, program.