A thin film of prussian blue analogues containing indium was first electrodeposited on platinum electrode surfaces. The modified electrode surface has been characterized by means of X-ray diffraction method as well as ir spectra. The result shows that the electroactive white film firmly attached to the platinum substrate is really composed of indium hexacyanoferrate (InHCF). The electrochemical behaviour of InHCF modified electrodes was studied by cyclic voltammetry (CV). Ion effects of the supporting electrolyte suggest that both anions and cations have a considerable effect on the electrochemical behaviour of the modified electrode. InHCF film modified electrodes are very stable under CV scanning.