With the recent change in cultural trends and roles as spaces, Gapyeong-gun, Gyeonggi-do, promoted the Integrated Brand Design Development Project in January 2017 to integrate and brand four libraries and build differentiated libraries. Upon commencement, this researcher conducted about eight months of big data and research analysis and finally established the brand through continuous review and reporting. The project was a public project for the public interest, saving about 2-3 billion won in budget, and the core of the project was to invest in the development of various content and cultural spaces so that people who use all libraries can enjoy rich experiences and benefits. In 2017-2018 in recognition of the purpose of this project and the excellence of design, we won the Grand Prize in Korea's top three pin-up design awards and the Korea National Land Design Competition Public Design Award, and it was introduced as a case of public design innovation in monthly magazines.