The special dust filter bag for copper and aluminum plants is made of polyester and aramid fiber blended needle felt. The polyester and aramid fiber blended filter bag that has been specially treated and made is an ideal high-temperature resistant filter material. This dust removal bag is strong, has a smooth surface, and dust is easy to peel off. It can be used for a long time at a temperature of 160 degrees, is corrosion-resistant, and has high dust removal efficiency.