PROBLEM TO BE SOLVED: To manufacture titanium oxide based fine particles that carry many antibacterial deodorant components, are stable even if they are fine, and are not aggregated.SOLUTION: Titanium oxide hydrate is prepared by adding a predetermined amount of aqueous ammonia solution at a predetermined rate while the temperature of aqueous titanium compound solution is kept in the range of 0-30°C, then it is cleaned, then a predetermined amount of hydrogen peroxide solution is added and dissolved, and then hydrogen peroxide is removed while it is stirred at 30-100°C, and it is aged.