The invention discloses an atomizing nozzle, comprising an inner nozzle and an outer nozzle; the inner nozzle is arranged in the outer nozzle in a sleeving way; an outer nozzle cavity is formed between the outer wall of the inner nozzle and the inner wall of the outer nozzle; the inner nozzle has an inner nozzle cavity; a first spray hole is formed in one end of the inner nozzle cavity; multiple second spray holes are formed in one end of the outer nozzle cavity and are formed around the first spray hole; a spraying direction of the second spray holes is inclined to a direction close to the first spray hole. The atomizing nozzle can directly atomize liquid without a swirler, and the problem of easiness in blockage of the swirler in the prior art is avoided. The atomizing process is compact, and the working efficiency of the device is improved.