In the present work，CoFe-B-P nanoparticles were prepared by solvothermal method and investi? gated their oxygen evolution reaction（OER）performance were investigated. The morphologic structures and composi? tion of the resultant samples were characterized by SEM，TEM，XRD，XPS，and ICP-OES. It was found when the mo? lar ratio of Co and Fe is 4，and the addition amount of NaH2PO2·H2O is 2.0 mmol，the resultant Co4Fe1-B-P catalyst exhibited the best OER performance with a low over-potential of 285 mV at a current density of 10 mA cm?2 and a small Tafel slope of 52.70 mV/dec，as well as excellent long-term stability in 1.0 M KOH after continue testing 20 h. The improved OER activity benefits from the electronic interaction between transition metal and nonmetal.