Disclosed herein are a heat-radiating substrate and a method for manufacturing the same. The heat-radiating substrate includes: an anodized substrate having an anodized film formed over a metal substrate; a circuit pattern formed on one surface of the anodized substrate; and a metal layer formed on the other surface of the anodized substrate. The metal layer formed on the other surface of the anodized substrate has the same area as that of the circuit pattern formed on one surface thereof, and is formed within an edge of the anodized substrate. The metal layer is added, making it possible to minimize a warpage problem of the substrate. In addition, a heat radiating plate is in direct contact with the anodized substrate, thereby making it possible to solve a performance deterioration problem of the heat-radiating substrate and a heat generating element and improve a heat-radiating performance.