Abstract: An electronic device, such as a multilayer ceramic capacitor, capable of suppressing grain growth of metal particles in a firing step, effectively preventing spheroidizing of internal electrode layers and breaking of electrodes and effectively suppressing a decline of a capacitance, and the production method are provided: wherein the production method of an electronic device including internal electrode layers and dielectric layers comprises the steps of forming a pre-fired internal electrode thin film having a dielectric thin film and a metal thin film; stacking green sheets to be dielectric layers after firing and the internal electrode thin films; and firing a multilayer body of said green sheets and said internal electrode thin films.