Abstract: The microstructure and properties of die-formed 7075/SiC_p composites prepared by spray deposition were studied. The SiC distribution, microstructure of matrix alloy, densities and hardness of the compacts were depended on the pressing temperature. The SiC layers in deposite were eliminated, the differences of densities and hardness between the top and bottom of the compacts were lessened as the pressing temperatures rise, and as the temperature rise above 600℃, the hardness decreased markedly. The results show that the optimizing pressing temperature lies between 560℃ and 600℃.