The present application provides an atomization assembly and an electronic cigarette, the atomization assembly comprises an atomization core and an oil storage element. The atomization core comprises an electrode assembly, an atomization tube configured to sheathe the electrode assembly and insert into the oil storage element. A blocking part is defined on an outer surface of the electrode assembly. An air-vent hole is defined at one end of the blocking part of the electrode assembly close to the battery assembly; the atomization tube is positioned at the other end of the blocking part. In the atomization assembly or the electronic cigarette of the present application, it is hard for the tobacco oil to be leaked to airflow passageway, hard for user to suck condensed tobacco oil and easy for assembling.