Background <p>An effective and efficient response to health needs requires the development of an evidence-based health service. Public health nurses are considered to be key practitioners of health service development in Japanese health administration, increasing the importance of the role of health service development. The purpose of this study is to build a practice model for evidence-based health service development adapted to the context of public health nursing in Japan (“Practice Model”).</p> Methods <p>The draft Practice Model consisted of 17 items grouped into three stages, was developed through literature research and regular consultations by the study team and feedback at two public gatherings. The framework and item-pool of the initial draft were built on implementation science models meeting one or more of the criteria set by the study team. The survey was conducted using the Delphi method, a consensus formation technique, and consisted of three rounds of self-administered questionnaires. The expert panel was formed by sending a request letter to supervising PHNs and PHN training course professors nationwide, and selecting those who expressed their willingness to cooperate and met the selection criteria.</p> Results <p>99 expert panel joined in Round 1 (52 practitioners and 47 faculty), of whom 81 cooperated in all three surveys. As a result of three rounds of opinion gathering and revision, high percentages of agreement of 80% or over were obtained in all rounds for all items. In particular, in Round 3, the percentages of agreement of 95% or over were achieved for all items.</p> Conclusions <p>The results of the Delphi survey showed that the Practice Model, which underwent revisions after each round, achieved a high level of consensus and was modified. The Practice Model clearly outlined the structure of evidence-based health service development. The novelty of this model lies in its structure, which includes three stages—the preparation stage (Type 1 evidence focus), the implementation stage (Type 2 evidence focus), and the dissemination stage (Type 3 evidence focus)—and incorporates important processes such as the Plan‑Do‑Check‑Act cycle and implementation science, while also positioning continuing professional development as the foundation for practice. In the future, the utilization of this Practice Model will serve as on-the-job training to enhance the health service development capabilities of public health nurses, which in turn is expected to improve the quality of evidence-based public health in the field.</p> Clinical trial number <p>Not applicable.</p>