An urban rain flood park refers to a park built with ecological function as the guide. The aim of this study is to examine the social benefits of urban stormwater landscapes. By establishing an evaluation model, conducting field research and analysis, comparing parks, and applying mathematical model analysis, the feedback from various user groups is assessed. The purpose is to explore whether ecologically oriented urban stormwater parks offer superior social benefits and to provide references for optimizing the benefits of urban stormwater park design. The paper selects Yanweizhou Park, Zhejiang Jinhua, a representative of innovative design practices in an urban rainwater park in China, as a case study for evaluation research and introduces the traditional park, Wuzhou Park, for comparison. The results show that Yanweizhou Park, which is designed based on ecology as the first principle, is still highly evaluated in terms of social performance. People think that ecological parks are more representative of the urban image. The eco-park is more popular with young people and more dispersed in activities. Both types of parks suffer from insufficient infrastructure construction.