An electronic cigarette includes a microprocessor, a battery module and a heating element. The battery module is electrically connected to the heating element and supplies power to the heating element with a first output parameter. The electronic cigarette further includes a sensing module, connected to the microprocessor and disposed in a smoke outlet passage of the electronic cigarette, for detecting the concentration of an analyte and sending it to the microprocessor. The microprocessor stores a preset threshold, the microprocessor receives the concentration of the analyte detected by the sensing module, and further determines the relationship between the concentration of the analyte and the preset threshold. When the concentration of the analyte is higher than or equal to the preset threshold, the microprocessor controls the battery module to supply power to the heating element with a second output parameter, wherein the second output parameter is smaller than the first output parameter.