A cleaning assembly cleans a multi layered glass window having at least two glasses forming an internal space. The cleaning assembly includes an internal magnetic body and an outer magnetic body. The internal magnetic body is disposed in the internal space of the glass window. The internal magnetic body includes an internal magnetic module including two or more pair of magnetic parts spaced apart from each other, a housing receiving each of the internal magnetic modules, and a bracket forming each of the housings as one structure, the pair of magnetic parts including two magnets facing each other by repulsion. The outer magnetic body includes an outer magnetic module attracted with the internal magnetic module, and a cleaning part surface contacted with an outer surface of the glass window by the attraction to clean the outer surface of the glass window corresponding to the outer magnetic module.