The activated carbon filter screen adopts aluminum honeycomb, plastic honeycomb and paper honeycomb with through-hole structure as the carrier. Compared with the traditional activated carbon filter, it has better aerodynamic performance, small volume density, large specific surface area, high adsorption efficiency, and small wind resistance coefficient. The honeycomb activated carbon filter is made of polyurethane foam loaded with powdered activated carbon, and its carbon content is about 35%-50%. It has the high-efficiency adsorption performance of activated carbon and can be used for air purification to remove the volatile organic compounds formaldehyde, toluene, hydrogen sulfide, chlorobenzene and pollutants in the air. The air resistance is small, the energy consumption is low, it can deodorize, deodorize, and purify the environment under a certain air volume, and has a good purification effect. It can be widely used in the treatment of organic gases such as toluene, xylene, benzene, phenols, esters, alcohols, aldehydes, and malodorous gases, and various gases with low concentration and large air volume containing trace heavy metals. The exhaust gas can be directly discharged after adsorption, concentration and purification.