An introducer sheath and method are disclosed capable of reducing a physical burden on a patient by shortening a time necessary for hemostasis at an introduction part after removing the introducer sheath percutaneously introduced into a body lumen. The method of indwelling an introducer sheath in a body lumen includes: puncturing a body lumen in which an introducer sheath needs to be indwelled； and introducing an introducer sheath into a puncture site of the body lumen, the introducer sheath including a catheter main body having a portion provided with a thrombus inducing material and a hub, which is connected to a proximal side of the catheter main body, and wherein the catheter main body is indwelled in the body lumen while a part of the portion provided with the thrombus inducing material is inserted into the body lumen through the puncture site.
