The invention discloses an electronic cigarette which comprises an atomizer and a cigarette holder, wherein the atomizer is used for atomizing tobacco tar, and the cigarette holder is connected with the atomizer. The atomizer comprises a controller, a coil and a magnetic metal heater, wherein the controller is used for transforming the voltage of a battery into high-frequency voltage, the coil is electrically connected with the controller, and the magnetic metal heater is inserted into a tar storage can for storing the tobacco. When the controller connects the battery, the coil generates high-frequency current and a high-speed changing magnetic field, and the magnetic metal heater generates eddy current in the magnetic field, emits heat and leads out the tobacco tar from the cigarette holder after atomizing the tobacco tar, so that the atomized tobacco tar is absorbed by a user. The invention further discloses an electromagnetic eddy current heating atomizer. The tobacco tar is directly heated by eddy current heating, heat conduction and heat loss are omitted, the atomizer is high in heat efficiency, rapid and uniform in heating, fine in tobacco tar atomizing effect, fine in taste, high in heating power, not easy to damage and long in service life.