The invention discloses an air conditioner filter element. Raw materials of the air conditioner filter element comprise polypropylene melt-blowing-HEPA filtering membrane composite filter cloth, biological bactericide and coconut shell activated carbon cloth. The method for manufacturing the air conditioner filter element through the raw materials comprises the following steps that 1, the polypropylene melt-blowing-HEPA filtering membrane composite filter cloth is soaked into the biological bactericide; 2, after base-layer non-woven fabric of the polypropylene melt-blowing-HEPA filtering membrane composite filter cloth is removed through treatment in the first step, the polypropylene melt-blowing-HEPA filtering membrane composite filter cloth and the coconut shell activated carbon cloth are combined to obtain the air conditioner filter element. The air conditioner filter element has the advantages that the air conditioner filter element can prevent dust and fine particles in external polluted air from entering a vehicle on the condition of ensuring circulation of the air in the vehicle and the external air, and accordingly PM2.5, methylbenzene, butane and other pollutants are effectively filtered out and prevented from entering the vehicle; meanwhile, formaldehyde and other pollutants in the vehicle are discharged out of the vehicle in an external circulation mode, and the anti-microbial and mildewproof effects are enhanced.