An embedded printed circuit board and a manufacturing method thereof are provided. The manufacturing method includes a first step of forming a first insulating layer having a seed layer formed on one side thereof and at least. one metal pattern embedded therein and a second step of laminating the first insulating layer and a base substrate with an inner circuit having a second insulating layer interposed between the first insulating layer and the base substrate. Accordingly, a printed circuit board with a circuit embedded in an insulating layer is provided, and thus a high-density and high-reliability printed circuit board can be achieved. Furthermore, since the printed circuit board is manufactured using a mold, a circuit manufacturing process for embedding, a process for forming a seed layer and a complicated process such as surface grinding are omitted so as to simplify the manufacturing process.