An electronic cigarette, an atomizing assembly, and a method of manufacturing an atomizing assembly. The atomizing assembly includes a liquid absorbing unit and a heating unit. The liquid absorbing unit is configured to absorb and store liquid and the liquid absorbing unit forms an atomizing channel therein and includes an atomizing surface on which the liquid is atomized and volatilized. The atomizing surface defines a boundary of the atomizing channel through which the smoke flows. The heating unit is configured to atomize the liquid and includes a buried portion and an embedded portion connected to each other. The embedded portion is embedded in the liquid absorbing unit and is internally tangent to the corresponding atomizing surface. The buried portion is wrapped in the liquid absorbing unit, wherein a predetermined distance is designed between the buried portion and the corresponding atomizing surface in a radial direction of the atomizing channel.