PROBLEM TO BE SOLVED: To provide a fishing hook being completely different from a conventional way of thinking in which the penetration and trapping rate are improved, the damage to fish is reduced, and further the underwater environmental pollution is reduced.SOLUTION: A fishing hook 1 of the present invention is used for a jig. The fishing hook 1 is characterized in that a mounting part 11 to the jig formed in a base, a body part 12 being bent in a substantially J-form and a hook part 13 in front of the body part 12 are integrally formed and provided with flexibility, and also the diameter d of the body part 12 is 0.025 or more and less than 0.040 to the length 1 of a body length L.SELECTED DRAWING: Figure 1【課題】貫通力および捕獲率の向上、魚へのダメージの軽減、更には海中の環境汚染の軽減を図る従来と全く異なる考え方の釣り針を提供する。【解決手段】本発明である釣り針1は、ジグに使用される釣り針1であって、基部に形成した前記ジグへの取り付け部11と、略J形に屈曲した胴部12と、前記胴部12の先の針部13とが一体に形成されて可撓性を有するとともに、前記胴部12の直径dが胴長Lの長さ1に対して0.025以上0.040未満であることを特徴とする。【選択図】図1