Abstract: On the basis of Zweben's shear lag assumptions, this paper proposes a modified shear lag model to study the micro stress redistributions induced by the interaction of the failures of the low elongation layer, interlaminated interface and some fibers in high elongation layers in interlaminated hybrid composites and to discuss the influence of interfacial failure on the stress concentration factors in high elongation fibers, and provides the theoretical basis for the micro statistical analysis for the ultimate tensile failure of interlaminated hybrid composites.