[Problem] There is provided a hemostatic device which can inflate an inflatable portion without using a separate dedicated instrument, which can reduce an unpleasant feeling of a wearer, and which can prevent a site where bleeding is to be stopped from being unintentionally and unnecessarily compressed. [Means for Resolution] A hemostatic device 10 has a band 20 for being wrapped around a limb W, means 30 for securing the band in a state where the band is wrapped around the limb, an inflatable portion 40 that is inflated by injecting gas into the inflatable portion, an injection part 70 that includes a storage space 70a capable of storing the gas, and that is capable of injecting the gas stored in the storage space into the inflatable portion, and a flow route 80 that causes the inflatable portion and the injection part to communicate with each other. The flow route includes a backflow check structure 82 which prevents the gas from flowing out to the injection part from the inflatable portion. The injection part is located on the band, and includes hole parts 70b and 70c which penetrate the injection part in a direction a2 intersecting a perpendicular line X1 to a region of the band where the injection part is located and which communicates with the storage space.
