<p>2024 aluminum matrix composites reinforced by 20 vol.% silicon carbide whiskers (SiCw/2024Al composite) were fabricated via pressure infiltration combined with hot extrusion deformation. SiCw was arranged along the composites’ extrusion direction (ED), and the mechanical properties exhibited anisotropy. The orientation behavior of these properties of the composites was closely related to the test temperature and stress state. The performance orientation behavior at room temperature and high temperatures above 300°C was relatively weak due to the composite’s lowtemperature brittleness and the matrix’s softening at high temperatures. At high temperatures below 250°C, the composites exhibited an obvious performance orientation advantage, showing better tensile mechanical properties along the ED than in the direction perpendicular to the extrusion direction (PED). Under the test condition of 200°C, the tensile mechanical properties of the composites along the ED reached: the tensile strength (452 MPa), the yield strength (438 MPa), and the elongation (13%), which were 7.1, 7.3, and 44% higher than those in the direction PED, respectively; the compressive mechanical properties of the composites were opposite to the tensile properties. The compressive mechanical properties in the PED reached: the compressive strength (705 MPa), the yield strength (458 MPa), and the compression ratio (40%), which were 4.9, 4.5, and 100% higher than those in the ED, respectively. This was related to the reinforcing phase’s directional arrangement and the composites’ microscopic defects.</p>