The purpose of this study is to clarify the character of Jørn Utzon's architectural thought from the whole and relative viewpoint. From five writings, 395 important words expressed architectural thought were extracted, and arranged by 76 keywords. They were arranged by 16 middle categories, and also were arranged by five large categories.In conclusion, Utzon's main architectural thought made from [Formal methodology] and [Sensuous methodology] became clear. The other was [Principle] which expressed the idea, and was [View of nature] as a source of the image. On the other hand, there were a few references about [View of the times].