The activated carbon filter has the high efficiency of activated carbon to absorb and use. It can be used as air filter to remove the volatile organic compounds formaldehyde, toluene, hydrogen sulfide, chlorobenzene and pollutants in the air. The activated carbon filter screen uses 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 surface area, high absorption efficiency, and low wind resistance coefficient. The honeycomb activated carbon filter is made of polyurethane foam with powdered activated carbon. Its carbon content is about 35%-50%. It has the effects of low air resistance and low energy consumption. It can deodorize and deodorize under the corresponding air volume. In addition to peculiar smell and air purification, it has a very good purification effect. In use, it is usually necessary to cooperate with independent primary a