PROBLEM TO BE SOLVED: To provide a method for efficiently producing a polyphenol composition having a high content of poorly water-soluble polyphenol and excellent solubility to water.SOLUTION: The method for producing a polyphenol composition includes the following steps (1) and (2) of: (1) heat-treating the poorly water-soluble polyphenol (A) at 100-180°C and (2) spray-drying or freeze-drying a treatment liquid within 600 minutes after the heat treatment, wherein the heat treatment is carried out under the condition that the mass ratio [(B)/((A)+(B))] of a solubilizing agent (B) relative to the total of the poorly water-soluble polyphenol (A) and the solubilizing agent (B) is less than 0.1.
