An electronic cigarette and method for assembling same is provided, wherein the electronic cigarette comprises an electronic cigarette body including a smoking end, an oil reservoir configured for reserving tobacco tar, an atomizer assembly configured for atomizing the tobacco tar, and a battery assembly electrically connected to the atomizer assembly and configured for supplying power to the atomizer assembly; the battery assembly and the oil reservoir are arranged in parallel; the atomizer assembly includes a heating wire assembly which is arranged at one end of the oil reservoir and is deposited outside the oil reservoir; a smoking channel is provided inside the electronic cigarette body, wherein the smoking channel is arranged outside the oil reservoir and is configured for discharging the smoke atomized by the atomizer assembly to the outside of the electronic cigarette body. The electronic cigarette can prevent the oil from penetrating into the smoking channel.