Because 185 1 London World Expo has achieved great success in the industrial fields of various countries, international exhibitions have been labeled as professional themes to attract visitors by looking for knowledge and inspiration. In the past 20 years, anthropologists, geographers and historians have gathered to discuss the significance of the theme of the World Expo in modern society. The theme is and will always be the leader of the World Expo. The World Expo remains a global educational network. For this reason, from the aspects related to their daily life, the World Expo has been used by countless people for personal cultural development. Milan, Italy is well aware of this principle and chose "Nourishing the Earth and Refueling for Life" as the theme of Expo 20 15. Pursuing food defense safety (good food and good water) and food safety (enough food and drink) is a way to educate people on the basic principles of sustainable development. Therefore, the theme chosen for Expo 20 15 will not only contribute to the improvement of human living standards, but also play a positive role in the development of human capital. Finally, the theme of "Nourishing the Earth and Refueling for Life" will promote understanding and cooperation among people, territories, communities and countries through education.