An electronic cigarette, including an air regulation ring assembly, an atomizing core assembly, and a base assembly. The air regulation ring assembly includes a mouthpiece having a fixing base and a rubber silicon ring, a first sealing ring, an air regulation ring having a fixing base, a second sealing ring. The atomizing core assembly includes a liquid barrier, a third sealing ring, a limit cover, a fourth sealing ring, a first piece of cotton, a second piece of cotton, a pair of heating wires, a fixing ring of the heating wires, a first insulating ring, and a heating wire connector. The base assembly includes a glass tube, a fifth sealing ring, a copper thread ring, a second insulating ring, and a connector.