Abstract: The present invention aims to provide a component and a method of manufacturing a photo-catalyst; this component includes titanium dioxide and silicon dioxide, wherein titanium dioxide is synthesized by a collosol gelatinization via utilizing the water generated by the esterification of acid and alcohol to conduct a reaction of hydrolysis condensation; the said silicon dioxide is synthesized by a collosol gelatinization via adding alkylaryl silane oxidized compounds; the photo-catalyst with these kinds of components is excellent in antifouling, sterilization, deodorization and can be efficiently applied to manufacturing raw material for textile fiber and coating textile products so as to make the manufactured textile products capable of antifouling, sterilizing and deodorizing.