[Problem] Provided is a hemostatic device capable of inflating an inflatable portion by a simple operation without using a dedicated instrument separate from the hemostatic device. [Means for Resolution] A hemostatic device 10 includes a band 20 for wrapping around a puncture site P of a wrist W, means for securing 30 that secures the band to the wrist in a wrapped state, an inflatable portion 40 connected to the band and inflated by being injected with gas, an injection part 60 which is elastically transformable and is capable of injecting air into the inflatable portion, and a tube body 70 that connects an inflatable space 40a of the inflatable portion and a housing space 60a of the injection part to each other, in which the tube body has a hole portion 71 opening in the inflatable portion and a cover portion 72 disposed on the tube body to cover the hole portion, and the cover portion has a communication portion 72a that allows communication between the inflatable space and the housing space by air discharged from the hole portion when air is injected into the inflatable portion from the injection part.
