Deformation damage of SiC_p/Al composites was studied by the combination of experiment and simulation.Based on ABAQUS software's secondary development, the stress state parameters(stress triaxiality, flexibility coefficient and Lode parameter) were output visually to analyze the micro damage characteristics. The experiment result shows that the particle with great axis ratio is easy to crack, while particle with small axis ratio is prone to interface debonding, which are the origin of crack formation. Accor...