The dye-sensitized photoelectric conversion element of the present invention has an electrolyte layer in which an ammonium ion, an inorganic salt and an iodide ion are dissolved in an organic solvent and in which the ratio of the molar amount of triiodide ions to the molar amount of iodide ions is less than 1%. High photoelectric conversion efficiency is obtained regardless of the kind of the sensitizing dye, and the design is also excellent.