Abstract: Under global climate change, the compounding effects of sea-level rise (SLR) and typhoon-induced storm surges have significantly exacerbated coastal flood risks in China, threatening socio-economic sustainability. Severe seawater intrusion events—triggered by extreme sea levels combining SLR, astronomical tides, and storm surges—exposed critical gaps in existing coastal defense systems. This study systematically reviews the recent evolution characteristics of sea level rise, typhoons, storm surges, and compound flood disaster risks in China"s coastal areas, while proposing adaptation strategies. Key findings reveal that: Over the past few decades, climate warming has accelerated SLR rates, amplified typhoon intensity, with northwestward migration of storm tracks; The frequency of storm surges exceeding 2 meters along China"s coast has doubled since the 1980s, particularly in the Bohai Bay, Zhejiang-Fujian coasts, and Pearl River Delta; The compound floods present tri-dimensional air-sea-land coupling dynamics, with nonlinear amplification effects observed when SLR coincides with storm surges and pluvial flooding; By the end of this century, the current 100-year flood events may recur a few years or even or more frequent events; Northern coastal areas such as Bohai Bay are expected to experience more flooding risk than before. The response strategies are proposed as follows: (1) Deepen the mechanistic study of multi-hazard coupling to enhance disaster prediction and early warning capabilities; (2) Develop a high-resolution dynamic risk assessment system and create region-specific prevention and control planning; (3) Form a comprehensive flood defense system of "ecological embankment -sponge cities - intelligent drainage". The analysis also highlights the significant cost-effectiveness of establishing early warning systems and upgrading flood defenses. Dynamic risk assessment can be incorporated into the planning standards of coastal cities, while strengthening the protection of ecological barriers such as coastal wetlands. This paper systematically examines the development patterns of coastal disasters under climate change and the response framework, with the aim of providing a scientific basis for disaster risk management in China"s coastal areas.