A phase-locking method for two individual fiber lasers is proposed to realize high power and high brightness fiber laser outputs.By taking a beam splitter with reflectivity of 50% at 45° as a interferomtric element to construct the Michelson cavity,two optical fiber lasers can realize coherent enhancement at output ends,so that the coherent combination output of two laser beams is complemented.The phase-locking principle is analyzed in detail and the phase-locking of two individual double clad fiber lasers is experimentally demonstrated.Experiments obtain a coherent combination laser output of 360 mW,and a power combination efficiency about 73%.Moreover,the on-axis power intensity is greatly enhanced.The phase-locking approach is simple and no power-limitation optical components,so the drawbacks of fiber couplers are eliminated and the output power can be further up scaled.These results show the method is one of the most promising phase-locking technologies in the high-power fiber laser coherent combination field.