The preparation of plasma polymerized vinylferrooene film (PPVF) on glassy carbon electrode and its cyclic voltammetry were investigated. Plasma polymerization on electrode was carried out by placing solid monomer (vinylferrocene) in the discharge region together with glassy carbon, etched by argon plasma beforehand. Properties of the films varied with experimental conditions. By using an inverted. boat reactor and placing monomer on both sides of glassy carbon electrode,plasma polymerization gives thin film of polyvinylferrocene which is adherent and electroaotive. Colored Newton's ring could be observed. on polymer films.