The characteristics of the building arrangement and the architectural genealogy of the temporary imperial palaces called "dairi-no-tei" in the Heian era are analyzed in this paper. Imperial Palace consist of two main buildings called Sisinden(front side) and Jijuden(back side). Jijuden was used as the main space in daily life for Emperor and in the ceremony for celebrating completion. But in the temporary imperial palaces except "dairi-no-tei" as well as in the aristocratic residences, only Sinden(main building) was used as main space in daily life and ceremony. This shows the difference in the concept of the building arrangement between them. And the particularity of "dairi-no-tei" in the building arrangement has been traced back to Imperial Palace.
