The chip embedded printed circuit board and a fabricating method thereof are disclosed, wherein a circuit pattern is formed by depositing a metal layer on a support layer, a semiconductor chip is packaged on a support layer to wrap the semiconductor chip and the circuit pattern on the support layer and to form an isolation layer, a via hole filled with conductive material is formed through the isolation layer for interlayer electrical connection, part of the support layer is selectively removed to form a plated heat sink, such that a packaging process can be performed in a very planar state and the plated heat sink can be integrated with a printed circuit board.