This invention is arranged, lining up into axial direction mutually, the plural electrodes the reagent layer 14 where were formed at least inside one electrode inside 10,11,12 which at the same time were formed to annulation and plural electrodes 10,11,12 and, regards the analysis equipment which it has. The analysis equipment of this invention the 1st electrode and the inside perimeter aspect were formed to annulation of the 1st electrode which through the opening, passes inside the 1st electrode, the reagent layer where of 2nd electrode and with of the inside perimeter aspect of the 1st electrode and the peripheral aspect at the same time were formed to annulation of the 2nd electrode which was formed and, is possible to be something which it has.本発明は、互いに軸方向に並んで配置され、かつ環状に形成された複数の電極10,11,12と、複数の電極10,11,12のうちの少なくとも1つの電極内部に形成された試薬層14と、を備えた分析用具に関する。本発明の分析用具は、環状に形成された第1電極と、第1電極の内周面とは隙間を介して第1電極の内部に挿通され、かつ環状に形成された第2電極と、第1の電極の内周面と第2電極の外周面との間の形成された試薬層と、を備えたものであってもよい。