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Cu-Ag alloys were prepared by the integrated technique of continuous casting and cold-drawing and finally aged. Mechanical and electrical properties of the alloys with different true strain η were measured. The change rules of their microstructure and mechanical and electrical properties were investigated and their strengthening mechanism and conductive mechanism were also discussed. The results show that with the increase of the true strain, the ultimate tensile strength and hardness of Cu-Ag alloys firstly increase significantly and then slowly and finally remarkably but the change rules of electrical conductivity with the increase of the applied strain is opposite completely. This preparation method of Cu-Ag alloys is simple and can improve their comprehensive performance