The poly-3,4-ethylenedioxythiophene (PEDOT) - polyaniline (PANI) electrochromic films are obtained by the electrochemical polymerization of EDOT on the indium tin oxide (ITO) surfaces modified by a thin film of PANI. It is shown that the anode synthesis of PEDOT on the ITO electrode modified by PANI leads to a significant improvement of the contrast ratio and changes a potential limit of the electrooptical activity of the obtained layer as compared with the individual polymer films.