The electrochemically controlled release of Ftorafur(FT 207) from the polypyrrole film on platinum electrode is studied.The result shows that the binding and release of FT 207 depends on the electrochemical redox process of the PPy film.The release amount of FT 207,which can reach 10 -5 mol/L,is proportional to the cathodic charge and thickness of the PPy film.