Abstract: The strategy of solving problem based on heating treating carburizing is studied in this paper. In order to advoid a one sided view or the system, multi-blackboard system used as the strategy of solving problem, no-generally recognized problem of the carburizing is argued by experts. Then system chooses the best conclusion. The theoretical framework of argument is builded based on propositional knowledge. From the framwork, several debate algorithms are designed according to different strategies. The results of the simulation prove the method is feasible.