The purpose of this study wants to explore Thailand's Diplomacy during the Second World War, in the difficult war time environment. How to be the best tool for this nation to safeguard national independence by using flexible diplomacy, during which time they use diplomatic skills not only avoid war in Thailand but also benefit the country's sovereign rights , while taking advantage of the approaching Japanese forces might invade Thailand originally into each other "friends" can take advantage to Thailand escaping direct war, Japan became protectorate to Thailand , this time Thailand has also played a so-called foreign policy " spread the risk " to diplomatic means to maintain their own independent status .