Cu doped perovskites SrFe0.9-xCuxMo0.1O3-delta (SFCM, x = 0-0.2) are explored as cathodes for IT-SOFCs. The influence of Cu doping on the property of SFCM series was studied in detail. The oxygen content decreases with the increase of Cu doping amount. SFCM samples are chemically compatible with LSGM electrolyte. However, the TEC values are still a bit higher than that of some common SOFC electrolytes. At 750 degrees C, the R-p values are 0.261, 0.227 and 0.155 omega center dot cm(2) for SFCM0, SFCM0.1, and SFCM0.2. The obtained activation energies for x = 0, 0.1, and 0.2 are 1.01, 0.98, and 0.87 eV, respectively. These results indicate that Cu doping into SrFe0.9-xCuxMo0.1O3-delta has a favorable effect on the electrochemical activity of the materials.