A mounting card has a sufficient holding force for holding an elongated flexible medical component and prevents deformation and breakage of the flexible medical component when the flexible medical component is pulled out from the proximal end side of the mounting card. The mounting card has a flat surface for holding the elongated flexible medical component. The flat surface comprises a U-shaped distal-side tab and a proximal-side tab that are formed in a pair. Furthermore, a distal-side of the proximal-side tab is parallel with a proximal-side of the distal-side tab, and a distance between the distal side of the proximal-side tab and the proximal side of the distal-side tab is larger than the diameter of the flexible medical component.