Atomizer

The utility model discloses an atomizer. The atomizer comprises a shell, an atomizing support and a sealing piece. The shell is provided with a liquid storage cavity, the atomization support is communicated with the liquid storage cavity through the first liquid supply channel, and the atomization support is sleeved with the sealing piece. A first groove is formed in the outer wall of the atomization support, the sealing piece covers the first groove, the sealing piece and the first groove form a first channel, the first channel is communicated with the outside of the atomization support, a second channel is formed in the atomization support, the second channel is communicated with the liquid storage cavity through a first valve, and the second channel is communicated with the first channel. The first channel, the second channel and the first liquid supply channel are arranged at intervals. According to the atomizer, air can be introduced into the liquid storage cavity through the first channel and the second