A semiconductor package is provided, which includes: a first dielectric layer having opposite first and second surfaces and a cavity penetrating the first and second surfaces; a first circuit layer embedded in the first dielectric layer and exposed from the first surface of the first dielectric layer; at least an adhesive member formed in the cavity and adjacent to the first surface of the first dielectric layer; an electronic element disposed on the adhesive member; a second dielectric layer formed on the second surface of the first dielectric layer and in the cavity to encapsulate the adhesive member and the electronic element; a second circuit layer formed on the second dielectric layer; and a plurality of conductive vias formed in the second dielectric layer for electrically connecting the second circuit layer and the electronic element, thereby reducing the package size and cost and increasing the wiring space and flexibility.