Abstract: Scouring is a significant cause of instability in offshore wind turbine monopiles.Current research primarily focuses on the impact of scour dimensions on monopile bearing capacity,while often neglecting the effects of scour-induced changes in soil stress history on mechanical properties.Using the Boussinesq solution,the post-scour stress state around the pile was evaluated,based on which the soil friction angle and void ratio were determined.The ultimate lateral soil resistance and the subgrade reaction modulus were then corrected,resulting in a p-y curve that accounts for both scour dimensions and stress-history effects.The research shows that scour design for monopiles should consider both the scour dimensions and the stress history.Ignoring the influence of stress history can result in underestimating the pile head displacement.As the scour depth increases,the pile head displacement increases exponentially while the maximum bending moment of the pile increases approximately linearly.When the scour width exceeds four times the pile diameter,it can be considered a general scour for design purposes.