A circuit board structure having a capacitor array and an embedded electronic component and a method for fabricating the same are proposed. Two carrier boards and a high dielectric constant material layer are provided, wherein the carrier boards have electronic components embedded therein and one surface of each carrier board has a plurality of electrode plates. The two carrier boards are laminated with the dielectric constant material layer interposed between them. The electrode plates on the surfaces of the carrier boards are opposite to each other across the high dielectric constant material layer to constitute a capacitor array. Therefore, the capacitor assembly for design of electronic devices is provided.