PROBLEM TO BE SOLVED: To provide a deodorant and a deodorizing method for reducing odor of lower alkyl (meth)acrylate or making it unperceivable.SOLUTION: The deodorant is composed of a polyoxyethylene hardened castor oil, a nonionic surfactant, and an anionic surfactant, which can eliminate the pungent odor of lower alkyl (meth)acrylate by touching to the lower alkyl (meth)acrylate.