An endoscope reprocessor according to the present invention comprises a first tank having a predetermined volume and disposed in a lowermost layer, and a second tank communicating with the first tank, wherein a processing tank in which the endoscope is disposed , A drainage port disposed in the first tank, a regulating section for regulating entry of the endoscope into the first tank, a regulating section for regulating entry of the endoscope into the first tank, a regulating section for regulating entry of the endoscope into the first tank, And a first water level detection unit for detecting whether or not the first water level set in the water level detection unit is flooded.本発明の内視鏡リプロセッサは、所定の容積を有し最下層に配置された第1槽、及び前記第1槽に連通している第2槽からなり、内視鏡を配置する処理槽と、前記第1槽に配置された排液口と、前記内視鏡が前記第1槽に入ることを規制する規制部と、前記第1槽と前記第2槽との境と同じ水位以下に設定された第1水位が浸水しているか否かを検知する第1水位検知部と、を含む。
