The fiberglass mesh filter for casting is made of high temperature resistant fiber material, coated with a special process and subsequent processing. It is convenient to use, can effectively remove non-metallic impurities in molten metal, reduces turbulence, eliminates casting pores, keeps metal elements stable, and has good high-temperature resistance and chemical stability. The fiberglass mesh filter can be widely used in the filtration of molten iron castings, aluminium castings, steel castings, and other alloy castings