The present invention discloses an electronic cigarette, comprising a main body and a heating device, wherein the main body is provided with a first locking member and a mounting chamber with an opening, the heating device is provided with a second locking member, the heating device is mounted to the mounting chamber along the opening, the second locking member is engaged with the first locking member to lock the heating device to the main body to form a locked state; one of the main body and the heating device is further provided with a driving member, and the main body is further provided with an through hole through which the external detaching device is inserted to extrude the driving member, so that the driving member drives the second locking member to be separated from the first locking member.