A method of producing a crystalline ITO dispersed solution, which contains the
steps of: (a) causing an aqueous mixed solution of an indium compound and a tin
compound to react with an aqueous basic solution, thereby generating a gel; (b)
removing water content from the gel by solvent-exchange, and dispersing the resultant
into an organic solvent; and (c) subjecting the resultant dispersed product to
heating treatment.