< Topic >The root which is used for the setting up and the particular setting up where for fishing the root by the fishhook can evade temporary offers the temporary prevention instrument.SolutionsAs setting up fishing, Harris the perforation hole which possesses the projection body which is projected in the side which is provided in the position where specified distance it is far from the fishhook of 25 where fishhook 24 and the fishhook is locked to the Tip and Harris and the size where the aperture of one side falls the projection body at least was formed, it consists of the foaming synthetic resin or the block body of elastomer which possesses the hardness to which the fishhook sticks, with from the Harris fishhook and the root which is provided between the projection bodies constitutes temporary prevention tool X.< Choice figure >Drawing 4【課題】釣り針による根がかりを回避できる釣り用仕掛け及び当該仕掛けに用いられる根がかり防止器具を提供する。【解決手段】釣り用仕掛けとして、釣り針24と、釣り針が先端に固定されるハリス25と、ハリスの釣り針から所定距離離れた位置に設けられる側方に張り出す突起体と、少なくとも一方の開口が突起体が嵌る大きさを有する貫通孔が形成された、釣り針が刺さる硬さを有する発泡合成樹脂又はエラストマーのブロック体からなる、ハリスの釣り針と突起体の間に設けられる根がかり防止具Xとから構成する。【選択図】図4