An electronic cigarette, including an atomization assembly and a battery assembly. The atomization assembly includes a mouthpiece, a first sealing ring sealing the mouthpiece, an insulating gasket, a first fixing ring fixing the insulating gasket, a mouthpiece holder, a second sealing ring sealing the mouthpiece holder, an observation tube, a cover, an e-liquid chamber, O-rings, a seal plug, a piece of cotton, a heating wire, a limit cover, an insulation ring, and a joint. The atomization assembly includes a mouthpiece, a first sealing ring sealing the mouthpiece, an insulating gasket, a first fixing ring fixing the insulating gasket, a mouthpiece holder, a second sealing ring sealing the mouthpiece holder, an observation tube, a cover, an e-liquid chamber, O-rings, a seal plug, a piece of cotton, a heating wire, a limit cover, an insulation ring, and a joint.
