A hemostatic device includes a cover member having a main body configured as a two-layer structure providing a holding portion holding a support member. The holding portion has an upper surface region on an upper surface side of the support member, a lower surface region on a lower surface side of the support member and facing the upper surface region across the support member, and a curved region connecting the upper surface region and the lower surface region on a proximal side of the support member. The curved region is formed by folding back a part of the main body, an edge of the lower surface region has a fixed region fixed to the upper surface region, and the fixed region is positioned on a distal side with respect to the support member and at a position surrounding edge portions of the support member in plan view.