Abstract: To implement advanced manufacturing technologies in enterprises,it is necessary to realize process management in the computer aided process planning (CAPP) system.Based on workflow management and software agent technology,a process workflow system is designed that is used to support process management.After the analysis of the workflow of process planning,a formal workflow model is built.An agent model composed of process model,intention model,skill model and companion model is also put forward to implement workflow management.A nested agent federation is constructed to enhance system flexibility.The key technologies of the system were realized in GS-CAPP and good results were achieved.