A semiconductor package includes a die, an insulation layer, a plurality of first electrical conductive vias, a plurality of second electrical conductive vias, a plurality of thermal conductive vias and a connecting pattern. The die includes a plurality of first pads and a plurality of second pads. The insulation layer is disposed on the die and includes a plurality of openings exposing the first pads and the second pads. The first electrical conductive vias and the second electrical conductive vias are disposed in the openings and contact the first pads and the second pads respectively. The thermal conductive vias are disposed on the insulation layer. The connecting pattern is disposed on the insulation layer and connects the first electrical conductive vias and the thermal conductive vias. The thermal conductive vias are connected to the first pads through the connecting pattern and the first electrical conductive vias.