Abstract: An electronic cigarette has an installing cavity formed at a bottom of the oil chamber, and a first internal thread arranged on an inner wall of the installing cavity. The glass guiding pipe has a pipe body and a flange sleeved and fixed on the pipe body, a first external thread connected with the first internal thread is arranged on a lateral side of the flange. The atomization core has a glass heating coil and an atomizing medium arranged at a top of the glass heating coil. Oil guiding holes are arranged on the flange, the oil guiding holes guide oil to the atomization core. An opening corresponding to the oil guiding hole is arranged on an inner wall of the oil chamber. A through-hole corresponding to the pipe body is arranged through a lengthways in the oil chamber, the through-hole connected with the installing cavity.