PROBLEM TO BE SOLVED: To provide an endoscope device capable of appropriately observing a test object using an appropriate illumination light according to intended use.SOLUTION: The endoscope device is structured so that a light source unit 4 for supplying illumination light for irradiating a test object to an insertion part 2 is detachably mounted on an operation part body 15 and so that after the light source unit 4 is installed on the operation part body 15, a control section 55 determines the type of a light-emitting element 46 (a light source) fitted onto the light source unit 4 and changes setting for controlling luminous power in observing a test object according to the determined type of the light-emitting element 46.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2020,JPO&INPIT【課題】用途に応じて適切な照明光を用い、被検体の観察を適切に行うことができる内視鏡装置を提供する。【解決手段】被検体に照射する照明光を挿入部2に供給するための光源ユニット4が、操作部本体15に対して着脱自在に取り付けられる構成とし、操作部本体15に光源ユニット4が取り付けられた際に、制御部55が、光源ユニット4に設けられた発光素子46(光源)の種別を判別し、判別した発光素子46の種別に応じて被検体の観察時における光量を制御するための設定を変更する。【選択図】図3