Cathodic electrodeposition of RuO2-TiO2 coatings on Pt and Ti substrates was performed via hydrolysis by electrogenerated base of TiCl4 and RuCl3 salts dissolved in mixed methyl alcohol-water solvent in presence of hydrogen peroxide. The deposits were characterized by X-ray diffraction, electron microscopy, thermogravimetric and differential thermal analyses. The effect of thermal treatment on the phase content and morphology of the obtained deposits has been studied. A possible mechanism of electrodeposition is discussed.