Trade remedy is the system that additional duty or import quantity restriction would be imposed on the import products, in case that unfair imports damage domestic industry or even proper import products damage significantly domestic industry. The system is secured by the act of unfair trade practice investigation & industrial damage remedy, tariff act, WTO agreement. Anti-dumping duty act is the system that duties are assessed with the equal or less amount of the difference between normal transaction price and dumping price, in case that the product imported under dumping price causes or may cause damages in domestic industry, or the development of domestic industry should be delayed practically. Recently, the problems related with anti-dumping duty imposed as the part of the trade remedy occur frequently. It is necessary to discuss whether the anti-dumping duty act is practically trade remedy which does comply with GATT regulations and WTO agreements as the criteria of international law and is in line with the intent of domestic act in the suffered country, or it does return to protective trade or reduce the protection of consumer. On the basis of this discussion, it would be difficult to impose the antidumping duty on industrial products in order to protect domestic industry, when considering the expected free trade agreements of Korea-US, Korea-China and Korea-Japan. In order to survive under the current severe competition of world trade market, companies should raise the competitiveness by themselves without relying on the current trade acts to provide with a certain protection. This thesis should bring those attentions.