Hierarchical　LaFeO3　fibers　were　prepared　by　a　sol-gel　nanocasting　method　using　a　cotton　cloth　as　the　template.　The　resulting　LaFeO3　fibers　inherited　the　initial　network　morphology　of　the　template　very　well　and　showed　enhanced　catalytic　CO　oxidation　activity　and　satisfactory　stability　compared　to　the　counterpart　particles　prepared　by　the　conventional　sol-gel　method.