Bridge breaking process of aluminium windows refers to adding materials with poor thermal conductivity to aluminum alloy materials for thermal insulation, so as to achieve the purpose of thermal insulation, and the corresponding thermal insulation capacity will be further improved. Among them, the bridge refers to the cold and hot bridge in architecture. Cold and heat can spread rapidly by using metal, and broken bridge is to separate the transmission paths of cold and heat with different materials, so as to achieve the purpose of heat insulation.