Due to climate change, many urban areas are under high flood risks, among which urban public open space is one of the most vulnerable places (Matos Silva and Costa, 2017). To make matters worse, public open space with flood adaptation measures are facing problems like spatial compression, poor integration, and low-quality landscape (Leinster et al., 2009). Moreover, current measures are invisible, underground, and engineering-oriented, which is hard to be perceived by people, let alone provide opportunities for people to understand, accept and contribute to it (Wong, 2006). Though with these problems, public open space, which are multifunctional, Interdisciplinary, and civic significant, have entailed characteristics and opportunities for adaptation efforts (Matos Silva and Costa, 2017). So, the research question is how to integrate lively and perceptible flood adaptation measures into public open space. Through the literature review, the research tries to look into three related fields(1) flood adaptation measures applicable in public open space; (2) how can these measures to be lively elements in public open space; (3) design methods to enhance people's perception of urban flood risks and functions of these flood adaptation measures. Substantial case studies will be followed to fill the research gaps in design methods. Based on the summary of the literature review and case studies, a design toolkit will be formulated to guide the urban design practices in the Hackbridge and Beddington Corner Neighborhood. In conclusion, discussions and limitations will be put forward for future research.