An electronic cigarette and an inhaling shell are disclosed. A mouthpiece is disposed at one end of an inhaling tube, a tobacco-liquid cup and atomizing device are disposed in the inhaling tube. The atomizing device includes an atomizing cup and an atomizer. The atomizer includes an electric heat wire and a fiber piece. The atomizing cup includes a cup seat, a cup cylinder, a support tube fixed on the cup seat and a liquid-storage member fitted around the support tube. The fiber piece is fixed on the support tube with both ends against an inner wall of the liquid-storage member to absorb tobacco liquid for atomization. The electronic cigarette and the atomizing device of the present invention facilitate disassembly and assembly, maintenance, and replacement, facilitate repeatedly adding tobacco liquid into the tobacco-liquid cup, and simplify manufacturing the electronic cigarette. The configuration of an air-puffing passage thereof makes the inhaling shell more compact with good performance of guiding tobacco liquid, leakage proof tobacco liquid and a heat insulation. The tobacco liquid volume therein is observable.
