Al-3Fe-0.3Sc alloy square bars were extruded and deformed with different passes by a self-made equal channel angular pressing(ECAP) mold in the Bc route, and the influence laws of extrusion passes on microstructure, mechanical properties and electrical conductivity of alloy were analyzed. The research finds that after ECAP deformation, the alloy grains are obviously refined, the grains present a specific orientation, and the long rod-shaped aluminum-iron phases are obviously broken under severe shear deformation the conditions. After the first pass of ECAP deformation, the tensile strength of alloy increases from 105 MPa in the original as-cast state to 121 MPa, and the elongation increases significantly from 5.7% to 25.7%. After the second pass, the increasing of tensile strength and elongation is not obvious. The hardness of alloy increases from 38.7 HV to 53.5 HV after the first pass of ECAP deformation, and increases to 60.4 HV after the fourth pass. The electrical conductivity increases from 42.9%IACS in the as-cast state to 46.4%IACS in the first pass, and the electrical conductivity remains basically unchanged with the continuously increasing of extrusion pass. The increase of strength and electrical conductivity is mainly due to the grain refinement, and the dynamic recovery occurs that is conducive to the transformation of high-density dislocations generated during the deformation process to the sub-grain boundaries, which reduces the vacancy defects in the crystal. Thus, the research results provide a reference for the performance optimization and practical application of Al-Fe alloy.