Perovskite oxides based on the alkaline earth metal lanthanum for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)in alkaline electrolytes are promising catalysts,but their catalytic activity and stability remain unsatisfactory.Here,we synthesized a series of LaFe1-xMnxO3(x = 0,0.1,0.3,0.5,0.7,0.9 and 1)perovskite oxides by doping Mn into LaFeO3(LF).The results show that the doping amount of Mn has a significant effect on the catalytic performance.When x = 0.5,the catalyst LaFe0.5Mn0.5O3(LFM)exhibits the best performance.The limiting current density in 0.1 mol-L-1 KOH solution is 7 mA-cm-2,much larger than that of the commercial Pt/C catalyst(5.5 mA cm-2).Meanwhile,the performance of the doped catalyst is also superior to that of commercial Pt/C in terms of the long-term durability.The excellent catalytic performance of LFM may be ascribed to its abundant O2-/O-species and low charge transfer resistance after doping the Mn element.