An electronic cigarette and a method for manufacturing an atomizing assembly thereof. The electronic cigarette comprises a liquid reservoir used for storing an e-liquid, and an atomizing assembly received in a shell. The atomizing assembly comprises: a liquid-absorbing element connected to the liquid reservoir, wherein the liquid-absorbing element is made of porous ceramic, and has a liquid-absorbing surface for absorbing the e-liquid and an atomizing surface; and a heating element embedded in the liquid-absorbing element, wherein the edge of the heating element is internally tangent to the atomizing surface, and the heating element is used for converting the e-liquid absorbed by the liquid-absorbing element into smoke. The electronic cigarette further comprises a power supply assembly received in the shell, connected to the atomizing assembly, and used for supplying power for the heating element.