Aimed at the problems that at the present time the model of air materials ordering is relying solely on human experience, the stagnancy responsed to variation of consume rules exists in and the credibility is low, and the amount of work is too heavy, a heuristic ordering model is established to calculate the classification, the properties’ discretation and the interval weight by using PAM cluster, Rough Set global discretation and PSO under the framework of ordinary ording model. Then, the MSE between the two models is compared. The result indicates that the heuristic model could help people get rid of the tedious work of calculate model by experience, and improve the veracity and response timeliness of model.