A medical atomizer includes a liquid storage container, a nozzle and an adjustable valve. The liquid storage container includes an air inlet, a fixed cover plate installed at the periphery of the air inlet, and a high pressure jet installed at the bottom of the liquid storage container. The nozzle is installed in the liquid storage container and covered onto the high pressure jet. The adjustable valve is interconnected to the air inlet and has a port selectively adjusted and moved to be covered by fixed cover plate. With the fixed cover plate of the air inlet, the air inlet can be selectively adjusted and moved to change the size of the port to be covered by the fixed cover plate, so as to adjust the flow of air entering into the air inlet.
