PROBLEM TO BE SOLVED: To reduce power consumption during measurement while retaining the operability of a subject in a blood sugar measuring device.SOLUTION: The blood sugar measuring device 100 includes a detection part 112 which executes a detection process for detecting the intensity of reflection light by irradiating a blood sample with light, and computes a blood sugar value based on the result of detection by the detection part 112. The blood sugar measuring device also includes: a chip detachably attached to the detection part 112； a protection cap 130 detachably attached to the detection part 112 to protect the detection part 112； an ejector 117 which can remove the chip and the protection cap 130； a sensor 216 for detecting the operation of the ejector 117； and a control part 200 for controlling the motion of the blood sugar measuring device 100 according to the result of detection by the sensor 216.【課題】血糖測定装置において、被検者の操作性を維持しつつ、測定時の消費電力の削減を図る。【解決手段】血液検体に対して光を照射し、反射光の強度を検出する検出処理を行う検出部１１２を有し、検出部１１２における検出結果に基づいて血糖値を算出する血糖測定装置１００であって、検出部１１２に着脱可能に装着されチップと、検出部１１２を保護するために、検出部１１２に着脱可能に装着される保護キャップ１３０と、チップ及び保護キャップ１３０の取り外しが可能なイジェクタ１１７と、イジェクタ１１７の操作を検知するセンサ２１６と、センサ２１６による検知結果に応じて、血糖測定装置１００の動作を制御する制御部２００とを備える。【選択図】図２Ａ
