To provide a cleaning device that can prevent a user from touching an electrode directly and take electric shock preventive measures.SOLUTION: A cleaning device 1 comprises a cleaning tank 3 for storing cleaning water RW, a container 4 for storing an object TB to be cleaned, an ultrasonic vibration part 5 that generates ultrasonic vibrations and an electrode pair 6a for performing electrolysis of the cleaning water RW. In the cleaning tank 3, an electrode storage part 6 recessed downward more than the surrounding area is provided in a bottom surface thereof and the electrode pair 6a is arranged in the electrode storage part 6.SELECTED DRAWING: Figure 1【課題】ユーザが電極に直接触れることを防止して、感電への対策を図ることができる洗浄装置を提供する。【解決手段】洗浄装置1は、洗浄水RWを収容する洗浄漕3と、被洗浄物TBを収容する容器4と、超音波振動を発生させる超音波振動部5と、洗浄水RWの電気分解を行う電極対6aとを備えている。洗浄漕3は、周囲よりも下方へ凹んだ電極対収納部6が底面に設けられ、電極対6aは、電極対収納部6内に配置されている。【選択図】図1