An endoscope cleaning/disinfecting apparatus 1 has a cleaning tank 4 capable of housing a plurality of endoscopes 100, a holding net 111 that is provided in the cleaning tank 4, and defines positions of the plurality of endoscopes 100 which are housed and set in the cleaning tank 4, and an endoscope information reading section 64. The endoscope information reading section 64 is provided in the cleaning tank 4, and, in a state in which one endoscope 100A is set in the cleaning tank 4 in a position defined by the holding net 111, is arranged in a site exposed toward an upper side of the cleaning tank 4 without being covered with the one endoscope 100A.