Y-doped La0.7Sr0.3CrO3-delta is a promising anode catalyst for solid oxygen fuel cell (SOFC). The performances of chemical and physical are measured by SEM, XRD and FT-IR. The conductivities of catalyst are measured by DC four-probe method in 20% H2S-N-2, 3% H-2-N-2 and air from 573K to 1173 K, respectively. The results show that Y-doped La0.7Sr0.3CrO3-delta powders have perfect perovskite phase structure with no extra peaks and exhibit good chemical compatibility with Ce0.8Sm0.2O1.9 (as electrolyte) in air. Through XRD and FT-IR analysis no sulfur-containing species is detected after exposure to the 20% H2S at 1173K for 5 h. Meanwhile, Y-doped La0.7Sr0.3CrO3-delta shows that the highest conductivity is 0.21 S/cm at 1173K in H2S. The open circuit voltages are 0.85V at 1173K in H2S and 1.04V at 823K in H-2. The maximal power densities are 12.4mW/cm(2) in H2S and 1.59W/cm(2) in H-2 for cells comprising Y-doped La0.7Sr0.3CrO3-delta-Sm0.2Ce0.8O1.9/Sm0.2Ce0.8O1.9/Ag. (C) 2010 Elsevier B.V. All rights reserved.