Electronic cigarette, atomizing core, atomizer and method of controlling electronic cigarette

An electronic cigarette, comprising a battery assembly, an atomizer comprising an atomizer body and an atomizing core mounted on the atomizer body, and a main control circuit, wherein the main control circuit comprises a sense unit for sensing remaining life cycle of the atomizing core, a compare unit for comparing data sensed by the sense unit with a preset threshold value, the atomizing core is detachably mounted on the atomizer body, the atomizing core comprises an atomizing core body, an identity identification element mounted in the atomizing core body for identifying identity of the atomizing core, a remaining life cycle memory element and a first electrical interface electrically connected to the atomizer body, the identity identification element being electrically connected to the first electrical interface, the atomizer body is provided with a second electrical interface electrically connected to the atomizing core, the second electrical interface is electrically connected to the main control circuit, the second electrical interface and the first electrical interface are used for an electrical connection to transmit data, and completing mechanical connection and fixing between the atomizing core and the atomizer body, and a control unit for controlling on and off of the electronic cigarette depending on comparison results.