To provide a liquid for forming a titania film, which has excellent preservation stability, further has high safety and excellent properties at low temperatures because of its neutrality, can form a uniform thick film of titania because of no occurrence of sagging even when thickly applied.

The liquid for forming the titania film is obtained by mixing a titania sol solution synthesized by acting hydrogen peroxide on a titanium hydroxide gel produced from an aqueous solution of a titanium compound and a basic substance with an organic substance containing a compound having an alkyl silicate structure and cellulose or a modified material thereof.