Abstract: In order to study the effect of solution temperature on the microstructure and properties of aluminum matrix composite, solution treatment at four different temperatures was conducted on aluminum matrix composite. Tensile strength, yield strength, Vickers hardness, reduction of fracture surface area and Young's Modulus were studied to characterize the properties, and the microstructure and SEM fractography were analyzed. The results show that the tensile strength, yield strength and Vickers hardness of the composite increase firstly and then decrease with the temperature increasing, while Young's Modulus and reduction of fracture surface area of composite have very small change firstly and then decrease rapidly with the temperature increasing. The strength of interface between matrix and SiC particles is strengthened due to the increasing temperature.