In this work, polyamide 6 (PA6) composites with carbon fibers (CF) were fabricated by alternatively stacking PA6 films and CF fabrics followed by being pressed. In order to improve the interfacial adhesion, carbon fiber surface was coated with phenoxy resin-based materials. The surface analyses of the fiber were carried out by XPS and dynamic contact angle method. Interlaminar shear strength (ILSS) of the composites was measured to evaluate the effect of the coating materials. The results showed that the composites with the coated CF had higher ILSS than that with neat CF by more than 20%. This indicated that a proper coating material can improve mechanical properties of the PA6 composites, which can be applied to the structural parts.