In view of the influence of the change of water level on seepage and slope stability in the flood process,taking the dike project in Kauswagan Power Plant as an example,we carry out coupling simulation of seepage and stability of slope of the east dike in flood process by using the finite element analysis software GeoStudio,based on reasonable assumption of flood process data.According to the static seepage analysis of the model,we verify and select the dike filling materials,and get to know dike stability changes in the flood process,which may serve as reference for similar dike engineering design.