Problem to be solved: to provide a biometric information measuring sensor and a biological information measuring apparatus capable of accurately measuring a secretion from a living body such as sweat or the like in real time.Solution: an electrode 20 for transmitting electrons between the target electrode 20 and a counter electrode 30 for supplying a current between the working electrode 20 and a reference electrode 40 as a reference of the potential of the working electrode 20 are provided on the insulating substrate 10, and the total of the electrode 20, the counter electrode 30 and the reference electrode A biological information measurement sensor 1 having a gel layer 50 in contact with and maintaining electrical conduction between these three electrodes.Diagram【課題】汗等の生体から分泌物をリアルタイムで正確に測定することが可能な生体情報測定センサ及び生体情報測定装置を提供する。【解決手段】測定対象成分との間で電子の授受を行う作用極２０と、作用極２０との間に電流を流すための対極３０と、作用極２０の電位の基準となる参照極４０とが絶縁性基材１０上に設けられており、さらに、作用極２０、対極３０、及び参照極４０の総てに接触して、これら３つの電極間の電気的導通を維持するゲル層５０と、を備える生体情報測定センサ１。【選択図】図１
