An electronic cigarette comprising an atomizer and a first case configured for accommodating the atomizer is provided; the atomizer includes a heating mechanism, a breather pipe, and oil storage cotton, the heating mechanism is received inside the breather pipe, and the oil storage cotton envelops an outer surface of the breather pipe; wherein, the heating mechanism is positioned along an axial direction of the breather pipe, and has a shape matching an inner surface of the breather pipe. The heating mechanism in the electronic cigarette has a large effective heating area so that more smoke can be generated by the atomizer.