An electronic cigarette, comprising: a mouthpiece assembly, an atomization assembly and a base assembly; the mouthpiece assembly comprising: 1) a mouthpiece ; 2) a limited post ; 3) a spring ; 4) a fixed ring ; 5) an upper cover that is rotatable; 6) a silicone ring ; 7) a cylindrical casing ; 8) a glass tube ; 9) a lower cover ; the atomization assembly comprising: 10) a first electrode ; 11) a first sealing joint ; 12) a first heating wire ; 13) a first piece of cotton ; 14) a first fixed seat ; 15) a sleeve ; 16) a second fixed seat ; 17) a second piece of cotton ; 18) a second heating wire ; 19) a second sealing joint ; 20) a second electrode ; the base assembly comprising: 21) a joint ; 22) a seal ring ; and 23) a base cover ; wherein: the limited post is disposed in the spring ; the cylindrical casing comprises a flange provided with a locating hole; and the spring is embedded in the locating hole; the fixed ring is disposed in the upper cover to control the rotation of the upper cover ; the silicone ring is disposed on the cylindrical casing ; the upper cover is disposed on the silicone ring ; the cylindrical casing is nested in the glass tube ; the lower cover is in threaded connection to the cylindrical casing and is disposed on one end of the glass tube ; the mouthpiece is disposed on the fixed ring ; the first piece of cotton wraps the first heating wire ; the first electrode is disposed on the first sealing joint ; the first heating wire and the first sealing joint are disposed on two ends of the first fixed seat , respectively; the first fixed seat is disposed in an upper part of the sleeve ; the second piece of cotton wraps the second heating wire ; the second electrode is disposed on the second sealing joint ; the second heating wire and the second sealing joint are disposed on two ends of the second fixed seat , respectively; the second fixed seat is disposed in a lower part of the sleeve ; and the seal ring is sheathed on the joint ; and the base cover comprises a central hole and the seal ring and the joint are disposed in the central hole. 1) a mouthpiece ; 2) a limited post ; 3) a spring ; 4) a fixed ring ; 5) an upper cover that is rotatable; 6) a silicone ring ; 7) a cylindrical casing ; 8) a glass tube ; 9) a lower cover ; 10) a first electrode ; 11) a first sealing joint ; 12) a first heating wire ; 13) a first piece of cotton ; 14) a first fixed seat ; 15) a sleeve ; 16) a second fixed seat ; 17) a second piece of cotton ; 18) a second heating wire ; 19) a second sealing joint ; 20) a second electrode ; 21) a joint ; 22) a seal ring ; and 23) a base cover ; the limited post is disposed in the spring ; the cylindrical casing comprises a flange provided with a locating hole; and the spring is embedded in the locating hole; the fixed ring is disposed in the upper cover to control the rotation of the upper cover ; the silicone ring is disposed on the cylindrical casing ; the upper cover is disposed on the silicone ring ; the cylindrical casing is nested in the glass tube ; the lower cover is in threaded connection to the cylindrical casing and is disposed on one end of the glass tube ; the mouthpiece is disposed on the fixed ring ; the first piece of cotton wraps the first heating wire ; the first electrode is disposed on the first sealing joint ; the first heating wire and the first sealing joint are disposed on two ends of the first fixed seat , respectively; the first fixed seat is disposed in an upper part of the sleeve ; the second piece of cotton wraps the second heating wire ; the second electrode is disposed on the second sealing joint ; the second heating wire and the second sealing joint are disposed on two ends of the second fixed seat , respectively; the second fixed seat is disposed in a lower part of the sleeve ; and the seal ring is sheathed on the joint ; and the base cover comprises a central hole and the seal ring and the joint are disposed in the central hole. <EOS>