Against the background of high-quality urbanization in China, all-age-friendly design has become an important part of urban livability. Taking Tai'an Central Park as the research object, this paper adopts literature research, field investigation and questionnaire survey to analyze the current situation of the waterfront park. It is found that there are some problems in the site, such as single function, insufficient consideration of different age groups, ecological degradation, spatial fragmentation and aging facilities. Based on the requirements of Tai'an's upper-level planning such as ecological priority, sponge city and all-age-friendly design, three strategies are put forward: to build inclusive all-age-friendly public space, to realize ecological resilience and low-impact development, and to integrate smart technology and regional culture to create a modern landscape. This study constructs a design framework integrating all-age friendliness, ecological resilience and smart empowerment, which can effectively improve the quality of waterfront space, inherit regional culture, and provide a reference for the design of similar modern urban waterfront parks.