The solid solution aging process can balance the mechanical and electrical properties of Cu Fe alloy, and the Fe content is an important factor affecting the microstructure and properties of the alloy. Cu-xFe (x=1, 3, 5) alloy was prepared by melting casting method, and the alloy was subjected to solution aging treatment. The effects of solution aging process and Fe content on the mechanical properties, conductivity, and microstructure of the alloy were studied. The results indicate that the precipitation of Fe atoms during aging treatment satisfies the Ostwald maturation mechanism and Marangon migration and aggregation mechanism. After aging treatment at 400 ℃×5h, the Cu-3% Fe alloy has a conductivity of 69.6% IACS, a tensile strength of 319 MPa, and a Vickers hardness of 87.5 HV. Under these conditions, the mechanical and electrical properties of the alloy match best. Based on the relationship between conductivity and the volume fraction of precipitated phase transformation, using the Martion"s law and Avrami empirical equation, the corresponding Avrami precipitation kinetics equation and conductivity equation of Cu Fe alloy during aging process were calculated. By comparing the conductivity obtained from experiments with the conductivity values calculated from the conductivity equation, it was found that the Avrami conductivity equation can accurately reflect the changes in conductivity of the alloy during aging process.