PROBLEM TO BE SOLVED: To provide a liquid deodorant agent composition for fiber products having excellent deodorant properties, and capable of reducing a reversion flavor.SOLUTION: A liquid deodorant agent composition for fiber products comprises (A) a specific polyhydroxyamine compound, (B) a tertiary ammonium salt type compound represented by a specific formula, (C) one or more compound selected from dibutylhydroxytoluene and butylhydroxyanisol, (D) a water-soluble polymer compound with a weight average molecular weight of 10000 or more and 5000000 or less, and (E) water.