The invention relates to the technical field of filters, in particular to an adhesive film for a filter, which comprises the following raw material components in percentage by mass based on the total mass of the adhesive film: 40 to 56 percent of acrylonitrile-butadiene rubber, 20 to 38 percent of tripolycyanamide modified phenolic resin, 0.1 to 0.5 percent of vulcanization accelerator, 2 to 8 percent of calcium carbonate, 1 to 6 percent of calcium sulfate, 1 to 2 percent of zinc oxide, 3 to 5 percent of softening oil, 0.5 to 1 percent of sulfur and 0.5 to 1 percent of rubber anti-aging agent. In the invention, the film adhesive made of modified rubber is used for bonding a filter, and the film adhesive is characterized by high / low-temperature resistance, corrosion resistance, radiation resistance, damp and leakage prevention, high electric insulation property, high weather resistance and high aging resistance, the adhesive film is nontoxic and odorless, and after being the adhesive film is cured, the surface of the adhesive film is flat, very tough and shockproof, the damage to the filter in transportation and installation is eliminated; therefore, the adhesive film is suitable for the filter and also suitable for adhering metal, plastic, rubber, glass, ceramic and other materials.