The Float Parade in Gion Festival changed its traditional route in 1956. This paper investigates the reason in relation with the policy of Kyoto municipality at that time. As the result, two facts have become clear: Firstly, the local government had set the Float Parade as a stake for tourism policy, and a greater street was needed for mobilizing the greater number of tourists. Secondly, there was Oike Street expanded just after the WW2, for which the Float Parade was introduced to make that use as "a new main street of Kyoto" as it were it "a new main street of Kyoto" as it were called then. These two political intentions could have been strategically combined to push the dramatic shift in the ritual inherited over generations.
