To carry out the Montreal Protocol, South Korea has completely prohibited the use of CFC which is a main refrigerant since 2010, and the use of HCFC is planned to be prohibited from 2040. Therefore, it is expected that dependency on HFC as an alternate substance of HCFC will be increased. Since HFC which is one of main substances causing global warming phenomenon may have a harmful influence on climate change, legal and institutional measures for totally managing HCFC and HFC are required. Therefore, in this study, the refrigerant management systems in EU, USA and Japan have been considered in three aspects, such as the legal system for refrigerant management, the management and regulation limits for products using refrigerant, and the reduction policies and trends, centering on HCFC and HFC which are international regulation and reduction objects. EU environmental law regulates over the entire process for ozone depletion substances, such as production, import, export, use, market release, recovery, landfill and decomposition thereof. The united states regulates forming agents, labeling agents or the like, pursuant to Article 608 of the Federal Clean Air Act (air conditioning and automobiles), and in the case of the state of California, PFC and SF6 including HFC are defined as high GWP, and separately classified and managed. Unlike EU and USA, Japan is characterized by applying the Freon recovery and decomposition law for totally managing the Freon-based gas such as CFC, HCFC and HFC, and regulations on the refrigerant recovery and decomposition for each product are also specified in separate law related to the recovery of End-Of-Life (EOL) home appliances and vehicles.