Providing a shield wire, which can be manufactured at low cost and have a good flexibility, the shield wire is structured by one covered wire, a metal foil shield wound around the covered wire, and a sheath covering around the metal foil shield. In the metal foil shield, slits 41 are formed linearly along a lengthwise direction of a core, and the slits adjacent to each other with a space in a direction intersecting the lengthwise direction of the core are staggered along the lengthwise direction. The shield wire including such metal foil shield has a good flexibility.