An electronic cigarette including an atomizing core assembly; a mouthpiece assembly; a base assembly; and a housing assembly. The atomizing core assembly includes a first heating wire, a second heating wire, a third heating wire, a fourth heating wire, a fifth heating wire, a housing for accommodating heating wires, a seal ring for sealing the heating wires, a pedestal for holding the heating wires, an insulation ring, and a first joint adapted for squeezing the housing of the heating wire. The mouthpiece assembly includes a cigarette holder, a first sealing ring, a second sealing ring, a base for holding the cigarette holder, a third sealing ring, and a fourth sealing ring. The base assembly includes a glass tube, a first lower sealing ring, a second lower sealing ring, a support for supporting the glass tube, a regulation ring, a sealing ring, a second insulation ring, and a second joint.