Electronic cigarette

1. An electronic cigarette, comprising a microwave heating module, wherein the microwave heating module comprises a cup, a cylindrical shielding net, a cover, a magnetron, and a microwave source;

wherein:

the cup is fixed in the cylindrical shielding net for accommodating a tobacco material;

the cylindrical shielding net is disposed above the microwave source;

the magnetron is disposed on the microwave source; the microwave source is adapted to activate microwaves in a power-on state, and the magnetron is adapted to emit the microwaves into the cylindrical shielding net to heat and atomize the tobacco material in the cup;

the cover is disposed on the cylindrical shielding net, and a shielding chamber is confined by the cylindrical shielding net and the cover;

each of the cylindrical shielding net and the cover is in a mesh configuration and has a plurality of mesh holes;

the cylindrical shielding net and the cover are adapted to convey air or vapor through the mesh holes;

the cylindrical shielding net and the cover are adapted to confine the microwaves within the shielding chamber and to concentrate the microwaves on the tobacco material in the cup; and

the cup comprises a non-metallic material selected from glass, ceramic, quartz, crystal, agate, and jade.

2. The electronic cigarette of claim 1 , wherein the microwave heating module comprises a control panel and a battery; the battery is soldered on an input end of the control panel; an output end of the control panel is soldered to an input end of the microwave source for inputting alternating current to the microwave source so that the magnetron emits the microwave.

3. The electronic cigarette of claim 2 , wherein the microwave heating module further comprises a silicone sleeve; the silicone sleeve is disposed around the microwave source; and the magnetron on the microwave source is exposed out of the silicone sleeve.

4. The electronic cigarette of claim 3 , wherein the cup is in the shape of a cylinder, oval, or convex pot.

5. The electronic cigarette of claim 4 , further comprising a sleeve, wherein the microwave heating module is fixed in the sleeve.

6. The electronic cigarette of claim 5 , further comprising a housing and a button; wherein the sleeve comprises an upper part exposed out of the housing and a lower part disposed in the housing; the button is disposed on the control panel and exposed out of a side wall of the housing; and the button is configured to switch on a power source.

7. The electronic cigarette of claim 6 , further comprising a mouthpiece, wherein the mouthpiece is disposed on the sleeve; the sleeve comprises at least one air vent; when in use, air enters the cylindrical shielding net via the at least one air vent of the sleeve and drives vapor resulting from the atomization of the tobacco material in the cup by the microwave to flow from the cover to the mouthpiece for user's inhaling.