High entropy alloy FeMnCrCoNi was prepared by magnetic levitation vacuum melting and forged at low temperature, and the influences of different forging temperatures on microstructure, mechanical properties and wear resistance of high entropy alloys were investigated. The results show that ascast high entropy alloy FeMnCrCoNi consists of dendrite with FCC structure and phases with black spots, the hardnesses of the alloys made by casting, forging at room temperature and 200 ℃  are 158.7, 313.6 and 358.1 HV respectively, and the tensile strengthes of the alloys are 539.45, 695.45 and 830.84 MPa respectively. Therefore, the hardness of alloysin the room temperature forging state and forging state at 200℃ increases by 97.6% and 125.6% respectively compared with the original cast alloy. However, the elongation decreases sharply from 47.24% of original cast state to 15.25% of forging state at room temperature and 5.38% of forging state at 200 ℃, respectively. Thus, the wear resistance of the alloy after forging is better than that of the cast, and the order of wear resistance of alloys is as follows: the forging state at room temperature is the best, the forging state at 200 ℃  is the second, and the original cast state is the worst.