▎ 摘　　要

NOVELTY - The utility model claims a high-efficiency protective circuit board, comprising a circuit board main body, the circuit board main body are orderly laminated with a first insulating layer, a first copper layer, a base material layer, a second copper layer, a second insulating layer, the first insulating layer is orderly provided with a first graphene layer from bottom to top, a first organic protective film layer; a first moisture-proof layer; the second insulating layer is orderly provided with a slowing layer from up to down; a second graphene layer; a second organic protection film layer; a second moisture-proof layer; the slowing layer array is provided with heat dissipation pore layer, and an organic protection film layer; the set of moisture-proof layer solves the problem that the circuit board is easy to be oxidized and easy to be affected by damp, realizing the circuit board is not easy to break after falling, improving the operation of the circuit board is stable, ensuring the quality of the circuit board, reducing the device fault frequency, prolonging the service life, effectively improving the working efficiency.