Abstract: Disclosed is an atomizer of an electronic cigarette, the atomizer including an airflow channel, a conductive line, an oil storage apparatus and an atomization core, wherein the atomization core comprises a liquid seepage member, an electric heating body and an atomization core housing, the liquid seepage member and the electric heating body are arranged in the atomization core housing, and the liquid seepage member is in communication with the oil storage apparatus; the airflow channel is in communication with the atomization core; the oil storage apparatus is an oil storage bottle; the oil storage bottle is integrally formed; a bottle cover is arranged on the oil storage bottle, and the bottle cover comprises a gas guide conductive pipe arranged under the bottle cover; the atomization core is detachably connected to the gas guide conductive pipe; the atomization core is arranged in the oil storage bottle; and the conductive line is conducting to the electric heating body from the bottle cover.