In order to generate task-oriented situation products, a role-based control method for situation product generation is proposed. Firstly, based on the analysis of situation product generation and task situation requirement, a role-based situation product generation model is constructed. Secondly, a set of alternative roles is extracted from task situation requirement relationship by concept lattice, and then valuable roles are selected according to comprehensibility and irreplaceability, and the role and its hierarchical structure are obtained. Finally, the role structure is used to constrain the modular structure of situation product, and the process of situation product generation is controlled. The case analysis results show feasibility of the method.