In the process of aluminum alloy die-casting, the mixture of lubricant release agent sprayed on the mold cavity, core surface, sliding block, push out element, punch and pressure chamber of aluminum alloy die-casting machine is generally referred to as aluminum alloy die-casting coating. Careful selection of aluminum alloy die-casting coating materials and reasonable spraying operation are important factors to ensure the quality of aluminum alloy die-casting and improve the life of aluminum alloy die-casting die.