The snap-on aluminum foil felt insulation sleeve features a new type of insulation material felt that is flame-retardant, heat-insulating, wear-resistant, anti-static, radiation-proof, and has a highly developed microporous structure. It has a large adsorption capacity and a fast desorption speed, resulting in excellent purification effects. The felt can be processed into various specifications of aluminum foil felt insulation sleeves, which are equipped with flame-retardant snaps for easy installation. It can effectively resist heat radiation and is applied in fields such as wall insulation, power plants, textiles, pipeline insulation, steel structures, etc.