An atomizing device for an electronic cigarette includes: an atomizing sleeve defining a liquid storage chamber for containing e-liquid； a heating element positioned in the atomizing sleeve and configured to heat the e-liquid to generate vapor； a liquid absorbing unit configured to absorb the e-liquid in the liquid storage chamber and transfer the e-liquid to the heating element； and a holder defining a hollow cavity. The holder fixes the liquid absorbing unit and the heating element, and the heating element is positioned in the hollow cavity. A temporary storage cavity is positioned under the holder. The holder defines at least one airflow through hole which is configured to communicate with the temporary storage cavity with the hollow cavity, the temporary storage cavity is configured to communicate with an air inlet, and the air inlet is in a higher position than a bottom of the temporary storage cavity.
