The present invention relates to a smoke and toxic gas suction removal-type firefighting nozzle device. The smoke and toxic gas suction removal-type firefighting nozzle device comprises: a spray head configured to receive water supplied from a fire hose to spray the water forward through an inner passage and having a plurality of intake holes that open the inner passage to the outside; and a gas introduction guider built into the spray head and configured to guide an inlet gas flowing into the spray head by the Venturi phenomenon caused by the sprayed water through the intake holes such that the inlet gas is mixed with water. According to the present invention, configured as above, a negative pressure is formed concurrently with water spraying, and ambient smoke and toxic gas are suctioned to be removed using the negative pressure, thereby securing the sight of a firefighter and minimizing damage which may be caused by the toxic gas. In addition, among the ambient smoke and toxic gas suctioned and introduced concurrently with water spraying, liquid particulate-based toxic gas is removed by dissolution and dilution in water, solid particulate-based soot, black dirt, fine particulate matter, and the like are subjected to physical adsorption, and the remaining nitrogen (N2) gas mixed with water is sprayed into flames so that the flames are cooled and extinguished by smothering. For example, inert gas such as about 78% of nitrogen gas (unaffected nitrogen) obtains the kinetic energy of water and is applied to flames to quickly extinguish a fire.