To provide a manufacturing method for a photocatalytic member forming a member having a photocatalytic thin film having high photocatalytic performance and excellent sliding resistance and film hardness in a wet method.

The manufacturing method for the photocatalytic member comprises a process for a coating dispersion sol of photosemiconductor particles on a surface of a substrate, applying a drying and heating process thereto and forming a layer having a photocatalytic property, and a process for coating a metal alkoxide further on the surface thereof and applying the drying the heating process thereto. In the method, the weight average molecular weight (Mw) of the particle hydrolysis and polycondensation product of the metal alkoxide is 300-1,000.