The invention provides an electronic cigarette which comprises a main shell, an atomizing component and a top cover, wherein the atomizing component is mounted in the main shell; the top cover is covered on the atomizing component; the electronic cigarette further comprises an electronic lock device and a control circuit board; the electronic lock device is arranged between the main shell and the top cover; the control circuit board is arranged in the main shell; when the atomizing component is electrified and works, the electronic lock device is controlled by the control circuit board to lock the top cover; when the atomizing component is power-off and stops working, the electronic lock device is controlled by the control circuit board to unlock the top cover. The electronic cigarette is high in use safety.