Cu-Ag-Zr　alloy　is　a　newly　developed　copper　alloy　material　which　has　an　excellent　combination　of　high　mechanical　strength　and　high　electrical　conductivity.　By　means　of　vacuum　induction　melting,　Cu-Ag-Zr　alloy　was　produced.　The　effects　of　aging　processes　on　the　microhardness　and　electrical　conductivity　characteristics　of　Cu-Ag-Zr　alloy　were　studied.　After　aging　at　450　A　degrees　C　for　4h,　the　alloy　showed　an　excellent　combination　of　microhardness　and　electrical　conductivity:　the　microhardness　and　electrical　conductivity　reach　126　HV　and　84%IACS,　respectively.　The　precipitates　responsible　for　the　age-hardening　effect　are　the　fine　and　dispersed　Cu(5)Zr,　which　has　a　face　center　cubic　structure.　Cu(5)Zr　precipitates　are　fully　coherent　with　the　Cu　matrix　and　give　the　Cu-Ag-Zr　alloy　higher　microhardness　and　higher　electrical　conductivity.