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In order to overcome the trade-off between the strength and electrical conductivity of aluminum alloy conductors,the new Al-Ce-Sc,Al-Ce-Y,Al-Ce-Zr and Al-Ce-Sc-Y alloys were prepared by die casting,high temperature homogenization treatment,hot extrusion and cold drawing.Adding Sc and Y eliminated the dendrite segregation of the as-cast Al-0.2Ce alloy and promoted the formation of equiaxed grains with the average grain size of 142.5 μm.The Al-0.2Ce-0.2Sc-0.1Y alloy inherited the great tensile properties of Al-0.2Ce-0.2Sc alloy and the high electrical conductivity of Al-0.2Ce-0.1Y alloy simultaneously.After cold drawing and annealing at 200 ℃ for 5 h,the ultimate tensile strength of Al-0.2Ce-0.2Sc-0.1Y alloy reached 200 MPa and 198 MPa,the elongation reached 6.8 ％ and 8.5 ％,and the electrical conductivity reached 61.01％ and 61.77 ％,respectively.The main second phase of Al-0.2Ce-0.2Sc-0.1Y alloy after hot extrusion were Al13Fe3Ce containing a few Y and Si atoms.The larger size and proportion of the second phase greatly reduced the concentration of solute Fe and Si atoms and the addition of Y significantly decreased the density of defects after cold drawing compared to Al-0.2Ce-0.2Sc alloy,which improved electrical conductivity of the alloy.Furthermore,the dispersed and coherent nano-size Al3Sc precipitions of Al-0.2Ce-0.2Sc-0.1Y alloy greatly improved strength,elongation and heat resistance.Compared with Al-0.2Ce-0.2Sc alloy,the lower density of dislocation,stacking fault and subgrain boundary and the larger size of Al3Sc precipitions with enrichment of Y atoms enable the Al-0.2Ce-0.2Sc-0.1Y alloy to maintain high strength,elongation and electrical conductivity after annealing.