[Problem] Provided is a hemostatic device capable of enhancing hemostatic effect by suppressing a decrease in blood flow rate of a radial artery and reducing numbness or pain occurring due to pressing of an ulnar artery.[Means for Resolution] A hemostatic device 10 includes a flexible band 20 configured to be wrapped around a part 220 of an arm to be subjected to hemostasis in which a radial artery 210 and an ulnar artery 230 are located, a securing portion 30 that secures the band in a state of being wrapped around the arm, a first inflatable portion 50 connected to the band and allowed to press a part to be subjected to hemostasis located in the radial artery by being inflated in response to injection of a fluid, a second inflatable portion 60 disposed at a different position from a position of the first inflatable portion in a longitudinal direction of the band and allowed to press the ulnar artery by being inflated in response to injection of a fluid, and an auxiliary balloon 160 disposed between the band and the second inflatable portion such that at least a portion overlaps the second inflatable portion and allowed to press the second inflatable portion.
