Abstract: In order to explore the mechanical and corrosion properties of the high strength and high modulus aluminum matrix composites, the aluminum matrix composites with reinforcing phase of 17% and 20% of volume fraction are prepared by powder metallurgy. The corrosion research results show that the corrosion of the aluminum matrix composites is closely related to the matrix. The exfoliation corrosion and electrochemical corrosion of the composites are less sensitive than those of the matrix. The addition of reinforcing phase deteriorates the intergranular corrosion and salt spray corrosion of the materials.