Aiming at the actual cold bending forming rolling process, in order to make more accurate analyses to stress and strain, the paper mentioned dynamic link model of rolling process, and based on the spline finite method , using the model to study the deformation analysis method of node and link in actual roll forming process, giving the holey stress and strain mathematics description type of link structure node, and on this basis intelligent node structure is given. Set up corresponding Agent for each node or link, establish knowledge rules for each Agent, realize a new method making use of link model to analysis cold bending forming. Provide the theoretical foundation of establishing a new complex profile groove design algorithm.