Electronic cigarette and battery rod thereof

An electronic cigarette, comprising a battery rod and an atomizer which are connected to each other, wherein the battery rod comprises:

• a battery cartridge, and a connector which is inserted at one end of the battery cartridge and is configured to connect with the atomizer, and a battery configured to supply power for the atomizer is provided in the battery cartridge;
• wherein the battery cartridge is a workpiece made of a non-metallic material, a connection cartridge is inserted at one end of the battery cartridge and is sleeved on the connector, the connection cartridge and the battery are coaxially arranged and are located at different positions in an axial direction of the battery rod, and the connection cartridge is inserted to a location in the battery cartridge deeper than a location in the battery cartridge to which the connector is inserted;
• wherein a fastening ring configured to clamp the connector is sleeved on the outside of the connection cartridge at a position corresponding to a position of the connector, the battery cartridge and the fastening ring are coaxially arranged and are located at different positions in the axial direction of the battery rod, and one end surface of the battery cartridge faces one end surface of the fastening ring.