Atomizer and electronic cigarette thereof

An electronic cigarette comprising a power module (16), the power module (16) comprising a housing (161), wherein the electronic cigarette further comprises an atomizer, the atomizer comprising an atomizer body, the atomizer body comprises a shell (1), a suction nozzle assembly (3) mounted at the top of the shell (1), a liquid chamber (4) and an atomization core are disposed in the shell (1);

• wherein the atomization core comprises an atomization sheet (5), and wherein an atomization cotton (7) capable of importing cigarette liquid from the liquid chamber (4) into the atomization sheet (5) is disposed in the shell (1);
• wherein the inner of the shell (1) is provided with an air inlet channel whose one end is communicated with the outside and the other end is communicated with an atomization surface of the atomization sheet (5), and an air outlet whose one end is communicated with the atomization surface of the atomization sheet (5) and the other end is communicated with the suction nozzle assembly (3);
• wherein an opening and closing device capable of controlling the cigarette liquid to flow into the atomization cotton (7) and the air to flow into the air inlet channel simultaneously is disposed at a connection position between the liquid chamber (4) and the atomization cotton (7);
• wherein the power module (16) is electrically connected to the connecting electrode (6) of the atomizer, and the housing (161) is clamped to the shell (1) through a connecting structure.