The invention provides a novel gasified jet nozzle which comprises an outer circular ring body (1), a middle circular ring body (2), an inner circular ring body (3), cooling chambers (4) and a sprayer (5); the outer circular ring body (1), the middle circular ring body (2) and the inner circular ring body (3) form a ring-pipe-shaped structure the cross sections of which are concentric circles; the sprayer (5) is positioned at the lower end of the ring-pipe-shaped structure; an outer ring inward jet annular channel (6) is arranged between the outer circular ring body (1) and the middle circular ring body (2); an inner ring outward jet annular channel (7) is arranged between the middle circular ring body (2) and the inner circular ring body (3); and the cooling chambers (4) are annular, and are arranged at one end of the outer circular ring body (1), which is close to the sprayer (5). Gasified agents and fuel materials of the jet nozzle structure can be jetted to different directions and collided, which is more beneficial to the uniform distribution of the gasified agents and fuel materials in the whole gasified surface and reasonable utilization of the whole space of the gasified surface.