Abstract: Influence of technological factors on the aging of Cu-3.2Ni-0.75Si-0.3Zn alloy was investigated with orthogonal test.It was founded that the sequence affecting electric conductivity and micro-hardness is as follows: aging temperature＞alloy's state＞degree of cold deformation＞aging time and aging temperature＞degree of cold deformation＞alloy's state＞aging time.The alloy can be direct aged after 60% cold deformation without solution and the properties will not be deteriorated.After proper aging and 60% cold deformation,the electric conductivity of the alloy reaches 41.96%IACS and the micro-hardness reaches 263.4Hv.