Abstract: Al/Cu composite was prepared by electrodeposition process combined with two hot rolling processes.The microstructure, room temperature tensile properties and tensile fracture of cold rolling Al/Cu composites and cold rolling Al/Cu composites after aging treatment were investigated.The results indicate that the interface of Al/Cu composites after cold rolling deformation is closely bonded, and Cu exists in the form of copper particles, and the particles are evenly distributed in the aluminum matrix after aging, but micro-cracks appear in the microstructure when the aging temperature is 150 ℃and 180℃.The mechanical properties of Al/Cu composite improve significantly after cold rolling deformation.After the aging treatment of the cold-rolled composite material, with the increase of the aging temperature, the strength of the composite material decreases significantly, but the strength of the composite decreases less after aging at 80 ℃for 10 min, which indicates that the precipitations in precipitated phase of Al/Cu composite make up for strength decrease caused by the dislocations disappearance.