Metal composite panel is made of aluminum, steel, stainless steel, copper or titanium-zinc alloy as the top panel and aluminum as the back, and the high-pressure and low-density polyethylene as the core material. It is formed by thermal compounding and a new type of high-grade building decoration materials. Customers can choose mineral fireproof core layer, such as B1 and A2 grade fireproof core material as the core layer in the middle. It can be used in curtain wall, roofing and interior and exterior decoration of high-grade buildings.