One method to improve efficiently polyaniline's electrochemical catalysis and anti- corrosion performance is to coelectropolymerize polyaniline and thiokol rubber in the non-aqueous solution.Because of having S—S bonds,the composite film with certain concentration of T R could catalyze the reaction with S—S bonds greatly,being used as cement and crossliker,here T R could prohibit the entrance of H+and other ions. Thus the corrosion protection of the PANI film is improved.All measurements have demonstrated that the electrodeposited composite film yields better electrocatalysis and wide application compared to the single PANI film.