The quality of life is threatened as incidents related to various hazardous chemicals, which are recently emerging as a social problem, are frequent. In particular, countless environmental health risks are seriously occurring, including the humidifier disinfectant incident, the Gumibulsan and radon bed incidents, the Iksan Jangjeom village, Incheon Sawol village, Anyang Yeonhyeon village and Namwon Nae village incident. The humidifier disinfectant case is in progress, and the Yangjang village and Sawol village are in the process of taking active countermeasures along with the recognition of the risk of danger by the Ministry of Environment. However, as a result of an epidemiological investigation, Naegi Village concluded that it is difficult to prove a causal relationship with the Ascon plant, which was raised as a problem factor, so that the cause of damage to the occurrence of many cancer patients and death was concluded with no reason. However, as the testimony of experts who participated in the epidemiological investigation at the time in 2016 was revealed recently, the need to re-examine the situation in the Beet Village is emerging. For this reason, this study can be explained as a successful case of environmental health risk-communication among a number of local cases in which problems related to environmental health risk-communication, and Naegi village can be evaluated as a representative failure case. This study was selected to review the research and analysis of success and failure factors in these two regions. The purpose of this study is to analyze the factors of success and failure of the two cases and present a more fundamental solution to the environmental health risk-communication problem in Korea as policy implications.