A dust chamber is arranged in the suction head of the utility model and is equipped with a rotating component which can rotate freely and a dust sweep component which is arranged around the rotating component and is formed by brush hairs comprising contractive hair. The brush hair is arranged at tip part of one side of cleaning surface and is slightly in sphere shape. One side of the tip part is contacted with the swept surface such as carpets and the other side can move along with the suction head. The fiber dust on the carpet can be grasped by the tip part which is slightly in sphere shape, removed from the brush of the carpet and guided toward dust chamber by the dust airflow. The dust winded the carpet hair can be high efficiently swept. Because the tip part of brush slides on the surface of the carpet, the utility model can more efficiently remove the dust.