A cleaning apparatus has a first magnetic board device and a second magnetic board device. The first magnetic board device has a first plate body, a first magnet, a first fastening member and a first cleaning pad. The first plate body and the first cleaning pad are attached to each other via the first fastening member. The first magnet is disposed on the first plate body. The second magnetic board device has a second plate body, a second magnet, a second fastening member and a second cleaning pad. The second plate body and the second cleaning pad are attached to each other via the second fastening member. The second magnet is disposed on the second plate body. The first magnet and the second magnet are magnetically attracted to each other, such that the first cleaning pad and the second cleaning pad are located adjacent to and facing towards each other.
