Abstract: To reveal the electrochemical performance of anode materials in the plating process of TFS products, the electrochemical impedance spectrum (EIS) of anodic materials in Cr ion solution, F ion solution and the mixture of Cr and F ion solutions was investigated via an electrochemistry work station. The results show that the polymerization structures of Cr ion, F ion and the mixture of Cr-F ions on anode surface have a remarkable effect on the electrochemical performance of the anode materials. Inductive reactance phenomenon is observed on EIS for C anode and lead alloy anode in Cr ion solution, and their polarization resistance value are small. Polarization resistance value of lead oxide anode is relatively higher. When F ions are added into Cr ion solution, the inductive reactance phenomenon of C anode and lead alloy anode surface disappears in the mixture of Cr-F ion solution, while the polarization resistance value of C anode increases and that of lead oxide anode decreases. But the polarization resistance value of lead alloy anode is higher than those of C anode and lead oxide anode. The conductance of lead oxide anode is improved greatly in the mixture of Cr-F ion solution.