Thirdly, the relating of sustainable tourism and the sufficiency economy philosophy was including with the agriculture the most. King Bhumibol said if Thai people are sufficiency, it means they are not needy, if they are not needy, they are not poorly. So he decides to make this philosophy for Thai people, so this sufficiency can be a sustainable philosophy. The philosophy of Sufficiency Economy will lead to balanced and sustainable development, and those who apply it will be ready to cope with all kinds of changes concerning the economy, society, the environment, knowledge, and technology.