This invention is to provide a fiber structure for deodorization which effectively removes aldehydes such as acetaldehyde etc. and has extremely small secondary odor emission risk. For that purpose, a fiber structure for deodorization, wherein inorganic particles and water-soluble amine compound are supported in a fiber structure, an equilibrated water content under the environment adjusted at a temperature of 25°C and a relative humidity of 75% is 15% by mass or less, and a pH when the fiber structure is immersed in water to 3% by weight relative to water is 3.5 to 7, is provided.