The reinforcing component for a refrigerator, which is formed by mixing a base material as a synthetic resin material and a supplement component formed by arranging reinforcing fibers according to a pultrusion method, and combined with one or more portions of on one portion of an inner side of an outer case of the refrigerator to contact with foam, a corner of the bottom of the refrigerator or in a mechanic chamber of the refrigerator, an outer plate or an inner plate of a door of the refrigerator, and the interior of a side wall forming an inner space of the refrigerator can reduce the weight of the refrigerator while maintaining the strength.