Titanium tetrachloride plasma were used to enhance the electrochromic properties of vanadium oxide (V2O5) powder. The plasma treatments were performed in a rotating 13.56 MHz radio frequency plasma system with optimized parameters. Titanium tetrachloride plasma treated and untreated V2O5 powders were deposited by pyrolysis spraying methods on to indium tin oxide conductive electrodes and the electrochromic properties were investigated. The film characterizations were carried out by using cyclic voltammetry, optic spectroscopy, scanning electron microscope and energy dispersive X-ray spectrometer. The properties of electrochromic devices were investigated with optic transmission changes in visible spectral range.