To provide a technique of easily sticking a sheath pipe to the bottom of the inner surface of an existing duct.

In this sticking and fixing method of the sheath pipe to the bottom of the inner surface of the duct, the sheath pipe 1 or more is stuck and fixed to the bottom of the inner surface of the duct with a material for sticking and fixing. The material for sticking and fixing is a sheet-like flat plate or curved plate having rigidity, the sticking surface side of the flat plate or the curved plate for sticking the sheath pipe is provided with an adhering means, the rigidity has a repulsive force for returning, when both side ends of the sheet-like flat plate or curved plate are mutually pulled, fixed, and rounded by stops, and the sheath pipe is pressed and stuck by the repulsive force of the material for sticking and fixing.