1. A system for reviewing defects comprising: an analysis module configured to analyze defect information of a plurality of intermediate products by using an analysis equation, the defect information including information of an amount of defects classified by sizes of the defects existing in each of the intermediate products, respectively; a failure magnitude calculation module configured to calculate a systematic failure magnitude of the intermediate products caused by fabrication procedure of the intermediate products by using the analysis equation and the analyzed result of the defect information; a classification module configured to classify a calculated result of the systematic failure magnitude with respect to each of the intermediate products; and a review target selection module configured to select intermediate products becoming review targets, based on a classified result.