PROBLEM TO BE SOLVED: To provide an endoscope cleaning device that can improve the work efficiency of a leak inspection process.SOLUTION: An endoscope cleaning device 100 includes a washing tank 20 for putting an endoscope 200 in. The endoscope 200 includes a connector part 210 to which a hose 400 for leak inspection is connected when the leak inspection is performed. A placing part 30 for placing the connector part 210 of the endoscope 200 is provided on the peripheral upper face of the washing tank 20. The placing part 30 is also located on the side on which the connector part 210 is positioned when the endoscope 200 is put in the washing tank 20 so as to be positioned in a predetermined position thereof.