The processing parameters were achieved about the thixoforming of spray deposition AlZn_ 12Cu_2Mg_2 wrought aluminum alloy in semi-solid ingots and the structures and mechanical properties of the analogue work pieces were tested. The optimum heat treatment parameters of the alloy by the optimization experiment were obtained (460℃ being the optimum solution temperature and 12-14h being the optimum artificial aging time). The results show that AlZn_ 12Cu_2Mg_2 alloy can achieve ideal mechanical properties and elongation after solution treatment and aging treatment by semi-solid process. Under 120MPa and at 595-600℃, the yield strength and elongation of the heat-treated parts can reach 664MPa and 7.5% respectively. The processing parameters were achieved about the thixoforming of spray deposition AlZn_12Cu_2Mg_2 wrought aluminum alloy in semi-solid ingots and the structures and mechanical properties of the analogue work pieces were tested. The optimum heat treatment parameters of the alloy by the optimization experiment were obtained ( 460  ℃ being the optimum solution temperature and 12-14h being the optimum artificial aging time). The results show that AlZn_12Cu_2Mg_2 alloy can achieve ideal mechanical properties and elongation after solution treatment and aging treatment by semi-solid process. Under 120 MPa and at 595-600 ℃, the yield strength and elongation of the heat-treated parts can reach 664MPa and 7.5% respectively.