Aluminum alloy matrix composites reinforced with single carbon or alumina and the two short fibers were fabricated by a performing squeeze-infiltrated method, respectively. The dry sliding friction and wear behavior of the aluminum alloy and its composites were investigated. The morphology of worn surface and subsurface was also observed and analyzed. The results show that carbon is of a self-lubrication in the composites in a degree. Wear rate of the hybrid composites reinforced with both alumina and carbon fibers is lower than that of unreinforced aluminum alloy, and composites reinforced with only carbon or alumina fibers. By comparison with mono-renforced aluminum alloy, the critical transition load from mild wear to severe wear of the composites reinforced with only alumina fiber is improved from the range of 147 N-196 N to 196 N-245 N. Moreover, the critical transition load of the hybrid composites reinforced with both alumina and carbon fibers is improved further to 245N-296N. The observations and analysis of worn surface and subsurface indicate that the reinforced fibers have no significant effect on wear mechanisms of aluminum alloy. The dominant mechanisms are abrasive and slight adhesion as well as delamination during mild wear stage. The subsurface consists of three regions: non-peeling delamination layer, microcracks formation and propagation zone, and unaffected zone. Whereas the dominant mechanisms are shifted to severe wear, and the non-peeling delamination layer is damaged during severe wear regime.