Since Information society represented by the Internet made its rapid progress, each country has developed a legislation which establishes a rule that limits the OSP liability under certain requirements with respect to the illegal distribution of information. Such legislation is classified as comprehensive-type legislation and bipartite -type legislation (Copyright detachable type) , two types of legislation. The former is a legislation to standardize the principle of comprehensive type of liability limitation that applies to all separate legal issues (copyright, defamation, privacy, etc.), whose examples are E-Commerce Directive in the EU, the legislation of the United Kingdom, France to implement it, and the Act of OSP liability limitation of Japan. On the other hand, the American legal system may be a good example of the bipartite-type legislation to distinguish the copyright infringement from other rights infringement. For the first time, principles of OSP liability limitation in Korea were provided in only Copyright Act(2003). However, the amendment of Act on Promotion of Information and Communications Network Utilization and Information Protection, etc.(hereinafter Act on Promotion of Information and Communications Network ) in 2007 included the provisions regarding OSP liability limitation. Korean legal system regarding OSP liability limitation turned the bipartite-type legislation such as the U.S. legal system. The amendment of Act on Promotion of Information and Communications Network of 2007 included not only OSP liability limitations but also ground rules by which the administration can command the removal of illegal information directly to the OSP. The administrative rule is characterized in that it is not limitation of OSP liability but imposing directly liability on OSP. Since the amendment of Copyright Act in 2009 included the similar regulation to Act on Promotion of Information and Communications Network , the characteristic has accelerated. This paper aims to review the legislative characteristics and problems of the OSP liability limitations, in comparison with foreign legislations and to present the improvement direction.