PURPOSE: An electronic cigarette is provided to allow the supply of liquid for one time smoking by a push button and to control the supply of liquid and power. CONSTITUTION: An electronic cigarette comprises a liquid storage unit (40) which includes a lid and supplies liquid by the opening and closing of the lid, a third cylindrical delivery unit (30) which receives liquid from the liquid storage unit and stores the liquid, a first cylindrical delivery unit (10) which receives liquid from the third delivery unit and stores the liquid, a second cylindrical delivery unit (20) which receives liquid from the first delivery unit and supplies the liquid to a heating unit, a spring (22) which is arranged to surround the outside of the second delivery unit, an opening and closing controller (70) for opening and closing a path between the first delivery unit and the second delivery unit, an external button (50) which controls the supply of liquid and power, a liquid control unit (60) for opening and closing the liquid storage unit and the first delivery unit, a power control unit (66) which is spaced from the external button, and a variable resistance (80) which is arranged to be in contact with the power controller.본 발명은 외부 버튼의 한 번의 조작에 의해 액체의 전달 및 공급을 가능하게 하고, 액체의 양 및 전원 공급의 양을 조절 가능한 전자 담배에 관한 것이다. 이러한 구동은 버튼과 액체 조절부 및 전원 조절부가 일체형으로 이루어져 있어 가능하게 된다.
