The Cu/1010 steel bimetal laminated composites (BLCs) were rolled to different thicknesses to investigate the effect of rolling direction and reduction on the microstructure evolution and mechanical properties. The difference of mechanical properties between the Cu and 1010 steel causes different thickness reductions, percentage spread, and cladding ratios. The formation of strong texture induces larger strength of the rolled samples, and as the volume fraction of 1010 steel is larger in Route-A, its strength is consistently greater than that in Route-B. The obstruction of interface to crystal and dislocation slip results in the formation of interface distortion, inducing dislocation density gradient when the rolling reduction is low in Route-A. The slip planes of the Cu and 1010 steel are more prone to suffer the normal strain, while the shear strain of other crystal planes is obviously larger than the normal strain under rolling load near the interface.