Abstract: A simulation technique for three-dimensional coupled deformation of work-pieces with rolls in strip rolling processes is developed. Three-dimensional rigid-plastic finite elements, elastic finite elements and influential function method for the analysis of deformation of rolls system are combined. The system is applied successfully to analyzing the rolling process of PC mill. A wealth of information is obtained about the lateral distribution of rolling load, lateral distribution of front and back tensions, lateral distribution of strip lateral flow, and lateral thickness distribution of rolled strip including strip crown and edge drop.