PROBLEM TO BE SOLVED: To produce a rod body capable of preventing degradation of strength of a female screw part and a method for producing the same.SOLUTION: The rod body formed by heating and firing and formed with a female screw part 2 on an inner peripheral surface includes an inner layer 10 having a reinforced fiber and a main layer 11 located on an outside of the inner layer 10 and having a main layer 11 having the reinforced fiber. The female screw part 2 is formed by molding and the inner layer 10 is irregularly deformed in a radial direction corresponding to a crest part 2a and a trough part 2b of the female screw part 2. A resin reservoir part 20 is formed at a place between the main layer 11 and the inner layer 10 and corresponding to the crest part 2a of the female screw part 2. The resin reservoir part 20 is formed of a thick part 13a of a resin filling layer 13.COPYRIGHT: (C)2013,JPO&INPIT【課題】雌ネジ部の強度低下を防止できる竿体とその製造方法を提供する。【解決手段】加熱焼成により形成され、内周面に雌ネジ部2が形成された竿体であって、強化繊維を有する内層10と、該内層10の外側に位置し、強化繊維を有するメイン層11とを備え、雌ネジ部2は成形により形成されていて、該雌ネジ部2の山部2aと谷部2bに対応して内層10は径方向に凹凸変形しており、メイン層11と内層10との間であって雌ネジ部2の山部2aに対応した箇所に樹脂溜まり部20が形成されている。該樹脂溜まり部20は、樹脂充填層13の厚肉部13aから形成されている。【選択図】図2