To provide a method and a tool for preventing corotation of a pipe supporting tool capable of preventing a bolt prior to screwing a nut from dropping out from an insert hole of the pipe supporting tool, and performing non-corotation of the bolt to rotation of the nut when screwing the nut, and fitting a corotation preventing tool after temporarily fitting a pipe supporting band on a supporting tool such as a turn buckle by means of the bolt and nut, and independently corresponding to conditions of a construction site.

The method for preventing corotation of the pipe supporting tool is characterized to control corotation of a bolt head by fitting a corotation preventing tool for a bolt from a pipe fitting direction, which is detachably mounted on the pipe supporting tool from a pipe fitting direction, and fasten the bolt and nut, after temporarily fitting the pipe supporting band on the supporting tool such as a turn buckle by means of the bolt and nut.