PROBLEM TO BE SOLVED: To provide a string-shaped magnet capable of generating magnetic lines of force over a wide range.SOLUTION: First magnetized parts 3 having flat polar boundary surfaces 3a and second magnetized parts 4 having polar boundary surface 4a on the same plane as the polar boundary surfaces 3a of the first magnetized parts 3 and having the opposite polarity from the magnetic polarity of the first magnetized parts 3 are alternately disposed one after another in line in the longitudinal direction of a synthetic resin flexible cable body 2 including magnetic powder.COPYRIGHT: (C)2010,JPO&INPIT【課題】 広範囲に亘って磁力線を発生させることができる紐状磁石を提供する。【解決手段】 磁性粉を含有し可撓性を有する合成樹脂製の索条体2の長手方向に沿って、平面状の極性境界面3aを有する第一着磁部3と、第一着磁部3の極性境界面3aと略同一平面上に極性境界面4aを有するとともに第一着磁部3の磁気極性に対して逆極性となる第二着磁部4とを、長手方向に順次直列にて交互に配置した。【選択図】 図1