PROBLEM TO BE SOLVED: To provide a biological information detector which measures information of the living body by a stable pressing force.SOLUTION: A biological information detector 1 includes: a housing 10 which has at least a bottom surface to be a first surface and an upper surface to be a second surface facing the first surface a detection part 20 which is provided for the bottom surface and detects an amount of reflected light of a measured finger, a finger to be measured and a support part 30 which is provided for the upper surface and with which the measured finger supporting the housing is in contact. The detection part 20 is arranged nearer a right end part 113 of the housing than a center of gravity 53 of the housing. The support part 30 is arranged nearer the right end part 113 than the center of gravity 53, and a distance from the detection part 20 to the center of gravity 53 differs from a distance from the support part 30 to the center of gravity 53.COPYRIGHT: (C)2015,JPO&INPIT【課題】生体の情報を安定した押圧力で測定する生体情報検出装置を提供する。【解決手段】生体情報検出装置1は、第一面である底面と、第一面と対向する第二面である上面とを少なくとも有する筐体10と、底面に設けられ、測定対象の指である測定指の反射光量を検出する検出部20と、上面に設けられ、筐体を支持する支持指が当接する支持部30とを備える。検出部20は、筐体の重心53より、筐体の右端部113側に配置され、支持部30は、重心53より、右端部113側に配置され、検出部20から重心53までの距離と、支持部30から重心53までの距離とが異なる。【選択図】図5