Failure of gear parts can be remanufactured by laser cladding technique, but with the performance of mechanical powder device greatly improved, higher performance of laser remanufacturing gear parts are required. To further improve the performance of laser remanufacturing parts, Fe314 laser cladding coating is duplex treated by the active screen plasma nitriding technique. We focus on the influence of active screen plasma nitriding technique on the laser cladding coating hardness and contact fatigue performance. The results show that Fe314 laser cladding hardness increases from 540 HV to 927 HV and the contact fatigue life increases from 2.42×105 to 4.94×105 after duplex treatment. Obviously, duplex treatment can improve the surface hardness and contact fatigue performance of Fe314 laser cladding coating greatly.