PROBLEM TO BE SOLVED: To provide an operation checking device and an operation checking jig capable of easily and appropriately checking an operation of a medical solution injection device by generating drag by a mechanism having further small temperature dependency.SOLUTION: An operation checking jig 500 includes a metal member (e.g., a metal plate 510) that is fractured by force received from a dummy slide member 420, when the dummy slide member 420 is slidingly moved by the medical solution injection device holding a dummy body member 410. The metal member is fractured, while giving, via the dummy slide member 420, resistance similar to that when the medical solution injection device holding a medical solution syringe slidingly moves a piston member to inject the medical solution into a living body.COPYRIGHT: (C)2015,JPO&INPIT【課題】より温度依存性が小さい機構によって抗力を発生させて、薬液注入装置の動作確認を容易且つ適切に行うことができる動作確認装置及び動作確認用治具を提供する。【解決手段】動作確認用治具500は、ダミー本体部材410を保持した薬液注入装置によりダミースライド部材420がスライド移動される際に、ダミースライド部材420から受ける力によって破断する金属部材(例えば金属板510)を含む。金属部材は、薬液シリンジを保持した薬液注入装置がピストン部材をスライド移動させて薬液を生体に注入するときと同等の抗力を、ダミースライド部材420を介して薬液注入装置に与えながら破断する。【選択図】図1