An electronic cigarette has a power device (1), a sensor (2), an atomizing core component and a liquid storage component (3). The atomizing core component includes an electric heater (5) and a liquid permeating component (6). The electric heater (5) has a through hole (51), the liquid storage component (3) has a channel (31), and the sensor (2) is connected with the through hole (51) and the channel (31) to form an airflow loop by the auxiliary air inlet. The liquid permeating component (6) is directly sleeved on the electric heater (5), so that the cigarette can adequately heat gasified smoke with uniform small drops. The electric heater (5) and the liquid storage component (3) are connected with the through hole (51) and the channel (31), so that the vapor generated by the atomizing process can be cooled.