Abstract: Analyzing the relation between the work roll profile and side camber of plate indicates that the side camber is liable to occur on workpiece with low stability during rolling if the work roll profile is convex. The off-line simulation results revealed that (1) if the backup roll crown and workpiece width remain unchanged, when the no-load work roll profile changes from convex to concave the loaded work roll crown lowers gradually; (2) if the backup roll crown remains unchanged, the wider the workpiece, the bigger the variation range of the loaded work roll crown; (3) when the backup roll profile changes from convex to concave, the loaded work roll profile or curved surface will translate upwards as a whole. The following measures are thus recommended to take to control the side camber of plate: (1) the top work roll profile should be ground into concave to a certain range before rolling; (2) the backup roll profile should be ground into convex to a certain range; (3) at the early stage of rolling process a considerable number of the workpieces to be processed into narrow plates should be scheduled.