PROBLEM TO BE SOLVED: To provide a device that can quickly and easily measure accurate body temperature having a high correlation with armpit temperature, etc. of a person to be measured and can link measurement data with an electronic medical record upon digitizing the data.SOLUTION: A body temperature measuring device 10A comprises: an infrared light detection part 11 that detects infrared light emitted from the neck of a person M1 to be measured and outputs a light receiving signal and a peak value determination part that determines that a peak value of temperature obtained from the light receiving signal shows the body temperature of the person M1 to be measured.COPYRIGHT: (C)2014,JPO&INPIT【課題】短時間で簡単に被測定者の腋下温度等と相関が高い体温を正確に測定し、測定データを電子化し電子カルテとの連携などを行なうことができる装置を提供する。【解決手段】体温測定装置10Aは、被測定者M1の頸部が発する赤外線光を検出して受光信号を出力する赤外線光検出部11と、受光信号から求めた温度のピーク値を被測定者M1の体温と判定するピーク値判定部とを備える。【選択図】図1