The present invention relates to a cosmetic automatic sprayer; wherein the cosmetic automatic sprayer comprises a shell in which a cup for containing cosmetic liquid, wherein a spraying mechanism connected with the cup and an air pipe connected with the spraying mechanism are arranged, and further comprises a slidable button and a shifting fork; wherein the spraying mechanism comprises a handle body, a spraying needle, a nozzle, a spring, a locking nut, an end cover nut and a shifting block; wherein the shell comprises a liquid outlet through which liquid sprayed by the nozzle is sprayed out; and, wherein atomized cosmetic liquid can be evenly sprayed onto a person's face and easily absorbed by the skin, resulting in a optimal and efficient application of the cosmetic.
