The conception of experiments is to find the different corrosion behaviors between hydrochloric and hydrofluoric acid rinsed artificial graphite (DPG) as anode material in lithium ion secondary battery. The electrochemical results such like Tafel slope were confirmed by cyclic voltammetry. According to the corrosion current density analyzed from the results of cyclic voltammetry, there is a distinction between two different systems and suggested by the specific adsorption between fluorine ion and chloride ion.