Atomization device and electronic cigarette with the same

An electronic cigarette comprising an atomization device (1), wherein the atomization device (1) comprises a sleeving tube (13), a liquid storage cavity (A), and a liquid injection tube (121);

• the sleeving tube (13) defines at least one air discharging opening (131) communicating with the liquid storage cavity (A);
• and the liquid injection tube (121) runs through the sleeving tube (13) and defines a liquid inlet (1211);
• when the liquid injection tube (121) is pressed inwards, the liquid injection tube (121) moves inwards to communicate the liquid inlet (1211) with the liquid storage cavity (A), and to communicate the at least one air discharging opening (131) with an external environment;
• and
• when the liquid injection tube (121) is released, the liquid injection tube (121) moves outwards to restore to its original position to isolate the liquid inlet (1211) from the liquid storage cavity (A), and to isolate the air discharging opening (131) from the external environment.