Abstract: A cleaning apparatus for a cleaner robot is provided and includes a main body. An accommodation cavity is formed inside the main body. The cleaning apparatus further includes a water spraying device and a sweeping roller, the water spraying device is disposed in the accommodation cavity and detachably connected with the accommodation cavity, and the sweeping roller is disposed in the accommodation cavity and detachably connected with the accommodation cavity. A water squeezing rod is arranged between the sweeping roller and the accommodation cavity. The main body is further disposed with a sewage recovery device detachably connected therewith. The sewage recovery device includes a sewage sink disposed at an inner side of the sweeping roller, and the sewage sink abuts against the inner side. The main body is further disposed with a driving device for driving the sweeping roller to rotate.