The study aims to explore the sacred in school sports day. There are two parts included. First of all, from the individual and social dimensions, the function and value of the sacred are discussed. Secondly, since school sports day combines the sacred elements in education, sports and festivals, the sacred in school sports days is justified. The school sports day based on the sacred can help the members in schools be aware of their own responsibility, improve relationship between teachers and students and carry out the ideal of education. Manifesting the sacred in school sports day is important, especially in modern times. If we can explore and make use of the holy essence of school sports day deeply, the quality of schooling will be improved at the same time. This is the reason why we should make efforts to bring the holiness of school sports day into our awareness.