To provide a butt plug locking structure that gives a gentle sense of quality to the operational feeling of a butt plug, and gives a solid feeling suitable for high-quality fishing rods such as sweet fish rods.SOLUTION: A butt plug 3 is screwed and fixed in the end of a rod end of a base rod 1. A female screw part 1A is formed in an inner circumferential surface in the end of the rod end of the base rod 1, and is screwed through a male screw part 3A of the butt plug 3. A locking coating layer 2 made of rubber-based paint is formed between the female screw part 1A of the base rod 1 side and the male screw part 3A of the butt plug 3 side, and the loosening of the butt plug 3 is prevented.SELECTED DRAWING: Figure 1【課題】 尻栓の操作感にしっとりした高級感を与え、鮎竿等の高級な釣竿に相応しい重厚なフィーリングを与える尻栓の緩み止め構造を提供する。【解決手段】 元竿１の竿尻端部に尻栓３をネジ止め固定している。元竿１の竿尻端部における内周面に雌ネジ部１Ａを形成し、尻栓３の雄ネジ部３Ａを介して螺着してある。元竿１側の雌ネジ部１Ａと尻栓３側の雄ネジ部３Ａとの間には、ゴム系塗料製の緩み止め被覆層２が形成されており、尻栓３の緩み防止を図っている。【選択図】図１
