Abstract: The present disclosure relates to a disposable electronic cigarette, including: a casing, a bottom cover is arranged at the bottom of the casing; an atomizer is accommodated in the casing, and the atomizer passes through a sealing ring of fixing member to arrange on the fixing member. The fixing member is further provided with a microphone, and the fixing member divides the electronic cigarette into a top chamber and a bottom chamber. The bottom chamber is provided with a battery, and the top chamber opens an atomizing tube shell and a tobacco tar chamber. The atomizing tube shell is connected to the atomizer and is not in communication with the tobacco tar chamber; the bottom chamber is further provided with a battery switch, the battery switch is connected to the battery to control on and off of the battery.