Abstract: Disclosed are an integrated electronic cigarette and a processing method thereof. The integrated electronic cigarette includes a housing, and a main unit, a cartridge, and an auto-eject structure that are disposed within the housing, where the main unit and the cartridge are respectively disposed on both ends of the housing, and the auto-eject structure is located between the main unit and the cartridge. To smoke the electronic cigarette, a user inserts cartridge into a through hole defined in an end surface of the housing and presses the cartridge to return and secure the auto-eject structure at a preset position; the cartridge is thus coupled to the main unit and ready for inhaling. When replacing cartridge or adding e-liquid, the user presses cartridge to force auto-eject structure to eject from the preset position, and releases the force allowing cartridge to eject from the housing before the cartridge is simply pulled out.