In this study, a public survey was conducted based on a theoretical study to study public awareness about the legislation of wearing life jackets. This survey obtained 885 responses from related organizations, academic societies, organizations, and from the general public. The variables consist of four categories: the actual condition of coastal use, the degree of understanding of related systems, the perception of the need for a life jacket, and the opinion on the legalization of the life jacket. More than half of the respondents were using the beach without wearing life Jackets, believing that there would be no accidents, and higher the understanding of the related system, the higher the agreement on legislation to wear life jacket. Respondents were aware that life jackets were necessary for safety, and in their opinion, places it was mostly needed was breakwater (including Tetrapod), and said that wearing life jacket should be legislated for swimming and fishing. The cause of the highest nimber of coastal accidents was carelessness, so it is necessary to have a mean to alert people about accidents, and just as fishing boats and leisure boats are required to wear life Jacket, it is necessary to establish a plan to gradually increase the scope of wearing life Jacket in activities such as fishing and swimming in the future.