Earth-rock seawall as a kind of traditional embankment type is widely used in port and waterway engineering.Because of the limitations on earth-rock seawall,its building construction defects and improper operation make it tend to have serious security problems such as seepage failure and a serious threat to the safety of buildings.In view of the existing engineering,this paper puts forward a new type of cement stabilized soil dikes seepage control structure,uses the finite element software ADINA,adopts Moore-Coulomb and Druker-Prager elastic-plastic constitutive model,and analyzes the average earth-rock seawall and cement solidified soil with different seawall embankment slopes the same dirty effect of fluid-solid coupling seepage field and stress field,strain field by numerical simulation.The results show that the cement stabilized soil can reduce the seawall,inside and outside embankment slope gradient to save the land resources,and save the whole of the engineering project investment.It is a kind of simple and reliable method.