The　electrochemical　CO2　reduction　reaction　(CO2RR)　is　of　importance　for　reducing　global　CO2　emissions.　Herein,　we　reported　a　highly　active　CO2RR　catalyst,　namely　Co-N-Ni/NPCNSs,　which　is　considered　as　an　advanced　single-site　catalyst　with　Co-N-Ni　bimetallic　sites　connected　by　a　N　bridge　between　Co　and　Ni.　The　N-bridged　Co-N-Ni　bimetallic　sites　were　confirmed　by　the　X-ray　absorption　spectroscopy.　The　Co-N-Ni/NPCNSs　catalyst　shows　a　higher　turnover　frequency　of　2049　h(-1)　at　a　low　overpotential　of　370　mV　and　CO　faradaic　efficiency　of　96.4%　compared　to　that　of　Co-N/NPCNSs　(1205　h(-1)　and　61.5%)　and　Ni-N/NPCNSs　(404　h(-1)　and　45.0%)　with　single　Co-N-4　and　Ni-N-4　sites,　respectively.　In　situ　synchrotron　radiation　Fourier　transform　infrared　spectra　and　DFT　calculations　show　that　N-bridged　Co-N-Ni　bimetallic　sites　promote　the　formation　of　COOH*　intermediates,　thus　accelerating　CO2RR.