PROBLEM TO BE SOLVED: To provide a filter medium used for an air filter, capable of suppressing eliminated odor of acidic odor, and having a dust collection performance and a deodorization performance.SOLUTION: There is provided a deodorant-including filter medium formed by sandwiching a deodorant between an air-permeable substrate (A) and an air-permeable substrate (B) and by sealing it by a thermoplastic adhesive. In the deodorant-including filter medium, which is a filter medium in which an alkaline deodorant is arranged on the air outflow side, and a neutral and/or acidic deodorants are arranged on the air inflow side, the air-permeable substrate (B) is an electret filter medium.SELECTED DRAWING: None
