A cleaner comprising: a suction part ; a main body including a cyclone part configured to separate dust from air suctioned through the suction part and a dust container disposed under the cyclone part and configured to store the dust separated by the cyclone part ; a filter part disposed in the cyclone part and configured to filter air in a process where dust separated from air passes through the filter part ; a movable part movably disposed in the cyclone part , the movable part including a cleaning part configured to clean an outer perimeter of the filter part in a movement process; a manipulation part disposed outside the main body and manipulated for moving the movable part ; and a transfer part passing through the main body and connecting the movable part to the manipulation part , wherein the movable part stands by at a standby position which does not surround a perimeter of the filter part in the cyclone part in a dust separating process, when the manipulation part is manipulated, the movable part moves and the cleaning part removes dust from an outer surface of the filter part , and the movable part includes a recessed portion recessed in a direction away from the suction part , at least a portion of the recessed portion facing the suction part , characterized in that the movable part further comprises: a frame configured to support an outer circumference surface of the cleaning part ; and a core part configured to support an inner circumference surface of the cleaning part and coupled to the frame , and the recessed portion is provided at a position corresponding to each of the frame , the core part , and the cleaning part . a suction part ; a main body including a cyclone part configured to separate dust from air suctioned through the suction part and a dust container disposed under the cyclone part and configured to store the dust separated by the cyclone part ; a filter part disposed in the cyclone part and configured to filter air in a process where dust separated from air passes through the filter part ; a movable part movably disposed in the cyclone part , the movable part including a cleaning part configured to clean an outer perimeter of the filter part in a movement process; a manipulation part disposed outside the main body and manipulated for moving the movable part ; and a transfer part passing through the main body and connecting the movable part to the manipulation part , wherein the movable part stands by at a standby position which does not surround a perimeter of the filter part in the cyclone part in a dust separating process, when the manipulation part is manipulated, the movable part moves and the cleaning part removes dust from an outer surface of the filter part , and the movable part includes a recessed portion recessed in a direction away from the suction part , at least a portion of the recessed portion facing the suction part , characterized in that the movable part further comprises: a frame configured to support an outer circumference surface of the cleaning part ; and a core part configured to support an inner circumference surface of the cleaning part and coupled to the frame , and the recessed portion is provided at a position corresponding to each of the frame , the core part , and the cleaning part . a frame configured to support an outer circumference surface of the cleaning part ; and a core part configured to support an inner circumference surface of the cleaning part and coupled to the frame , and the recessed portion is provided at a position corresponding to each of the frame , the core part , and the cleaning part . <EOS>