Abstract: The limit rollable thickness is an important theoretical criterion for judging whether the rolled parts can continue to be thinned further during the thin strip rolling process, but the existing theoretical models rarely consider the effect of rolling process on the rollability of rolled parts. As a result, the variation law of the deformation zone features of thin strip rolling with the rolling process is studied by finite element simulation in this study. Furthermore, the Hertz elastic theory and the elastic-plastic stress state of a point are used to conduct theoretical study on the limit rollable thickness based on the rolling force. The results demonstrate that the rolled part rollability is closely related to the rolling process, that as the limit rollable thickness approaches, elastic deformation occurs mostly in the deformation zone, and that the corresponding contact pressure distribution conforms to the Hertz elastic theory. By comparing the relationship between the equivalent stress of the extreme point and the yield strength, the elastoplastic state of the rolled part can be accurately assessed, and the rolling force per unit width can be used to better predict the rollability of the rolled part under a given process, and the limit rollable thickness under the given rolling force can be reversed.