A cleaning apparatus according to one embodiment comprises: a robot cleaner including a dust collection canister and a first suction device; and a docking station including a second suction device, which communicates with the dust collection canister to suction air if the robot cleaner is coupled thereto, and a collection part for collecting foreign material, moving together with the air, by means of the driving of the second suction device, wherein the robot cleaner includes: a communication unit; and a control unit for controlling the first suction device if the robot cleaner is coupled to the docking station, controlling the communication unit to transmit a control command to the docking station, and periodically changing the suction force of either the first suction device or the second suction device.