[Problem] To provide an introducer sheath that is percutaneously inserted into a biological lumen and can shorten the time required for hemostasis at a wound site and lessen the physical burden on the patient after withdrawal of the introducer sheath.[Means for Resolution] An introducer sheath 100 includes a catheter body 110 to be percutaneously introduced into a biological lumen, a hub 120 that is connected to the proximal side of the catheter body, and a drug part 160 that has a hemostatic agent capable of treating a wound site in biological tissue. The drug part is disposed at the proximal side of an outer surface 117 of the catheter body.