[problem] It is provided that an activated carbon sheet to be excellent in removability of hazardous gas component and flame retardancy.[solution] A flame-retardant deodorizing filter comprising an activated carbon layer and a fabric formed on both sides thereof, wherein the fabric has a fiber ratio of one or more kinds selected from cellulose fibers, polyvinyl alcohol fibers, polyacrylonitrile fibers, and phenol fibers in 30% or more a phosphorus-based flame retardant is contained in an amount of 10 to 70% by weight relative to the fabric weight an adhesive layer is present between the activated carbon layer and the fabric the activated carbon particles are firmly adhered by thermoplastic resin binder particles and the weight per unit area of activated carbon is 50 to 400 g/m2.
