The invention discloses an anti-crystallization nozzle which comprises two glass nozzles, wherein the two glass nozzles are mutually perpendicular and have opposite outlets; a water outlet nozzle is perpendicularly arranged and sprays water from bottom to top; a gas outlet nozzle is horizontally arranged and sprays gas from the side surface to inner side; a container, in which an aqueous solution is accommodated, is arranged outside the two glass nozzles, surrounds the water outlet nozzle and the gas outlet nozzle and is provided with an opening; the opening is formed in a laterally upper part of the container, so that the solution sprayed by the water outlet nozzle perpendicularly upwards is shielded by the container, and the gas sprayed by the gas outlet nozzles horizontally inwards is enabled not to be shielded by the container. The aqueous solution accommodated in the container and water formed by gathering a part of liquefied mist on the container wall deposit in the container to generate a moist environment and moisten the glass nozzles, so that crystal substances are not generated in the openings of the glass nozzles to prevent the nozzle from being blocked. In addition, the container does not affect the normal operation of a salt mist system.