To provide a method for coating a mixed liquid capable of easily coating an article to be coated with the mixed liquid in which a particulate mixing substance is mixed in a solvent liquid to obtain the mixed liquid with a higher viscosity than that of the solvent liquid, and simultaneously reducing a transportation cost of raw materials for the mixed liquid, and an apparatus for coating the mixed liquid.

The method for coating the mixed liquid is characterized by separately transporting at least one kind of the particulate mixing substance and the solvent liquid to be mixed with the mixing substance to a mixing and discharging means (a spray unit 4), mixing the mixing substance and the solvent liquid by the mixing and discharging means to form the mixed liquid with a higher viscosity than that of the solvent liquid, and discharging this mixed liquid from the mixing and discharging means to coat the article A to be coated with it.