The focus of this study is a coastal high-resolution(2′×2′)two-way coupled wave-tide-surge interaction model,including three main physical mechanisms.Comparisons and analysis of simulated and measured wave heights and sea level considered two moderate storm cases for the Huanghe Delta coastal area.The effects of different physical mechanisms on wave heights are mainly influenced by wave-current interaction,including radiation stress.Wave-age dependent surface wind stress and radiation stress mechanisms in the coupling wave-tide-surge interaction model show positive impact on sea level,and the wave-current interaction bottom stress mechanism shows negative impact on seal level.The comprehensive effects of the three main physical mechanisms show positive net impact on seal level and increase sea level by around 20cm for the storms considered.Overall,the results we show that the wave heights and sea levels simulated by the coupled wave-tide-surge model agree better with the measured values than uncoupled model results,particularly for peak storm conditions.