A dust suctioning system is disclosed. The dust suctioning system includes: a dust suctioning unit which includes a housing with a plurality of inlets on the top thereof and an opening and closing member which is formed in the inlet and opens or closes the inlet by pressure which is applied from the top of the housing; and a collector which is arranged near the dust suctioning unit and suctions foreign materials from the inlet to the outside of the dust suctioning unit. The collector includes a sensor which senses a moving body which approaches the dust suctioning unit and operates when the moving body is sensed by the sensor.
