The present invention has an object to provide a method for purifying a fluorinated hydroxyl compound of the formula 1 safely in a high yield under industrially practical conditions. Namely, a mixture containing a fluorinated hydroxyl compound of RfnullCR1R2nullOH (Formula 1, wherein Rf is a C1-20 polyfluoroalkyl group, and each of R1 and R2 is a hydrogen atom or a C1-3 alkyl group) such as 2,2,3,3-tetrafluoropropanol, and a compound having an unshared electron pair, is distilled by heating in the presence of a solid acid catalyst such as a cation exchange resin catalyst, or by adding a proton source such as water.