Abstract: Provided are a layered substrate that has excellent mechanical properties such as a flexural strength or a flexural modulus applicable to a structural material, the variations in those mechanical properties are small, exhibits excellent formability into a complicated shape, and is able to be molded in a short time, and a method for manufacturing the same. A layered substrate fabricated by layering plural sheets of sheet-shaped prepregs containing a reinforcing fiber oriented in one direction and a thermoplastic matrix resin, wherein the prepreg has a slit penetrating from the front surface to the back surface, each slit is provided so as to intersect with each reinforcing fiber only one time.