An electronic vaporizer, configured to be used in combination with an electronic vaporizer device body, wherein the electronic vaporizer device body at least comprises a power supply, a first pin, a second pin, and a third pin and is configured to control, after being combined to the electronic vaporizer, the power supply to supply power to the electronic vaporizer through the first pin and the second pin; and the electronic vaporizer comprises: a storage compartment, storing a vaporizable substance; and a heating circuit, comprising: a heating component, configured to heat the vaporizable substance; and a first contact pad and a second contact pad, electrically connected to the heating component,wherein the heating circuit changes a voltage or current between the first pin and the second pin after the first contact pad and the second contact pad being electrically contacting with the first pin and the second pin respectively; and after detecting that the voltage or the current changes, the electronic vaporizer device body controls the power supply to supply power to the heating component via the first contact pad and the second contact pad; the electronic vaporizer further comprising: an authentication circuit, comprising a third contact pad, wherein the third contact pad is in electrical contact with the third pin after the electronic vaporizer is combined with the electronic vaporizer device body; the authentication circuit further comprises a first resistor electrically connected to the third contact pad; characterized in that the first resistor is configured to indicate flavor information of the electronic vaporizer, a resistance of the first resistor is detected and obtained by the electronic vaporizer device body at least via the third contact pad, thereby allowing the electronic vaporizer device body to determine the flavor information of the electronic vaporizer. a storage compartment, storing a vaporizable substance; and a heating circuit, comprising: a heating component, configured to heat the vaporizable substance; and a first contact pad and a second contact pad, electrically connected to the heating component,wherein the heating circuit changes a voltage or current between the first pin and the second pin after the first contact pad and the second contact pad being electrically contacting with the first pin and the second pin respectively; and after detecting that the voltage or the current changes, the electronic vaporizer device body controls the power supply to supply power to the heating component via the first contact pad and the second contact pad; the electronic vaporizer further comprising: an authentication circuit, comprising a third contact pad, wherein the third contact pad is in electrical contact with the third pin after the electronic vaporizer is combined with the electronic vaporizer device body; the authentication circuit further comprises a first resistor electrically connected to the third contact pad; characterized in that the first resistor is configured to indicate flavor information of the electronic vaporizer, a resistance of the first resistor is detected and obtained by the electronic vaporizer device body at least via the third contact pad, thereby allowing the electronic vaporizer device body to determine the flavor information of the electronic vaporizer. an authentication circuit, comprising a third contact pad, wherein the third contact pad is in electrical contact with the third pin after the electronic vaporizer is combined with the electronic vaporizer device body; the authentication circuit further comprises a first resistor electrically connected to the third contact pad; characterized in that the first resistor is configured to indicate flavor information of the electronic vaporizer, a resistance of the first resistor is detected and obtained by the electronic vaporizer device body at least via the third contact pad, thereby allowing the electronic vaporizer device body to determine the flavor information of the electronic vaporizer.