The utility model discloses a four-layered through-hole printed circuit board and a mobile terminal employing the four-layered through-hole printed circuit board and overcomes difficulties in achieving more functions and saving costs on the same printed circuit board in the prior art, wherein signal wires and power wires of pins on the inner layer of a chip of the printed circuit board are connected with a peripheral circuit through surface wiring. Compared with the prior art, the embodiment of the utility model, namely the four-layered through-hole printed circuit board, improves the performance of a stable system in an external compensation manner, enables the four-layered through-hole printed circuit to have the same amount of functions as a six-layered one-step plate, greatly saves cost, and can be applied in mobile terminals such a telephone.