El Salvador is a small country with a small population and a small land area in Central America, but it plays a key role in the Central American Integration System (SICA) and the Central American Common Market (MCCA). El Salvador has made a significant contribution to the conclusion of free trade negotiations between Korea and Central American countries and to the conclusion of such agreements. In addition, Korea and El Salvador are alliances that have maintained various cooperative relations since establishing diplomatic relations between the two countries in 1962. On the other hand, El Salvador, which is highly dependent on the US economy, has dollarized its own currency since 2001. In addition, the government of El Salvador, has established the Five-Year Plan for National Development 2014-2019 and 2011-2024 Industrial Policy to foster promising industries and develop related industries. Therefore, this paper examines the politic, economic, industrial, trade and investment policies of El Salvador in order to raise the understanding about El Salvador and the industrial policy. We also analyzed relevant influencing factors.