La0.75Sr0.25MnO3 perovskite nanofibers were successfully synthesized by electrospinning method and structurally characterized. These nanofibers display higher catalytic activities for CO oxidation and CH4 combustion than the nanoparticles prepared by traditional hydrothermal method. The high catalytic activities could be attributed to the large surface areas, pore volumes and excellent thermal stability even under 750(circle)C calcination. In addition, the nanofibers provide more contents of Mn4+ sites and adsorbed surface oxygen atoms for the dissociation of gaseous O-2 on the surface. (C) 2014 Elsevier B.V. All rights reserved.