The crystal temperature interval of wrought 6082 alloy is much wide and the mechanical property of cast forming is very bad. The mechanical property of hot press forging is much better, but the cost and the tonnage of equipment are high. The effects of different technological parameters on the microstructure and mechanical properties of liquid forged 6082 alloy were discussed. The results show that the average values of mechanical properties obtained were close to that of hot press forging and better than the metal\|die castings. And the microstructure was finer. When the pressure of 125 MPa was applied，the microstructure was fine and symmetrical, and the ultimate tensile strength, the plasticity and the rigidity were perfect; when alloy pouring temperature was 660 ℃, the strength is high, the plasticity and the rigidity were perfect when the temperature was 680 ℃；holding time was affected by a number of factors, with the extended holding time, the mechanical properties decreased.