This research regards risk management with a goal of zero playground accidents in Osaka prefectural parks. It was conducted by the Osaka Prefectural Park Association in response to public concern? about accidents in park playgrounds in recent years. Ten prefectural parks were investigated. The research method was to analyze reports and online information, and to empirically verify the four-year research results in each prefectural park. As a result, the implementation methods were made clear as follows: (1)Electronic playground equipment registry for information management (2)Creation of playground equipment inspection manuals and the planning of playground equipment safety inspection technical lectures for quality management (3)The creation of pamphlets to teach playground equipment safety, picture story shows, hosting events, and surveying the use of playground equipment as use management. New methods of communicating information were clearly described,such as reducing the number of accidents,improving work efficiency by creating databases, and picture story shows. These are positioned as empirical research.