The invention relates to an inspirator and an atomization component thereof. The atomization component comprises a casing, an atomization element and a switching valve. An atomization chamber, a liquid guide channel and a liquid storage chamber for storing liquids are formed in the casing. The atomization chamber is communicated with the liquid guide channel which is communicated with the liquid storage chamber. The atomization element is arranged in the atomization chamber and is used for atomizing liquids. At least part of the switching valve is arranged in the liquid guide channel and is used for controlling on or off of the liquid guide channel. By means of the inspirator and the atomization component thereof, the switching valve is arranged in the liquid guide channel between the atomization chamber and the liquid storage chamber, and on or off of the liquid guide channel is controlled through the switching valve. When the inspirator is not used, the switching valve cuts off the liquid guide channel, the atomization chamber and the liquid storage chamber are sealed relatively, and accordingly, liquids in the liquid storage chamber are volatilized through the atomization element, and the taste of electronic cigarettes and the medical atomization inspirator effect cannot get worse for being put for a long time.