Abstract: Effect of microelement Cr and Zr on performance of copper alloy was studied through mechanial performance,electric conductivity performance and corrosion performance tests of pure copper and Cu-Cr、Cu-Zr、Cu-Cr-Zr alloy.It shows that Cr and Zr alloying element can improve the strength notably,strengthing method is precipitation strength,the electric conductivity of copper alloy falls as dispersion phase yielded in aging treatment blocks the movement of electron,weight-loss rate of pure copper and alloy increases with exposure time in NaCl fog environment,the corrosion resistance of alloy increases with addition of Cr and contrarily decreases with addition of Zr.