Large extrusion container services in the condition of high temperature and cyclic pressure, which results in creep-fatigue interaction. This leads to deformation and crack of the container mostly and affects the product efficiency and cost of extrudate. This paper puts most concern on lifetime calculation method under fatigue-creep interaction. Based on the boundary condition of extrusion process, DDM method is employed to analyze the stress distribution of multilayer interference extrusion container. Fati...