Abstract: In this Paper, the electrochemical behaviors of pyrrhotite electrode in butyl xanthate solution arestaled. A series of tests by potentiostatic steps, galvanostatic steps and cyclic potential seanning had been carredout on pyrrhotite electrode. The results demonstrate that the stability of dixanthogen adsorbed on pyrrhotite surface is affected by kinetic behavior of dectrochemical reduction. The equations of them are set up.