This paper designs and implements an automatic grouping method for cascade production planning department and steelmaking plant in organizational production. The original data of group casting in this system is downloaded from SAP system to MES system by production planning department, and then decomposed into batch planning. Production plan data arrives in the database, After automatic calculation, judgment and other processing, the system triggers the next step of furnace group pouring operation. The whole process can timely and accurately form furnace number and pouring number data, and has traceability and data coherence. Triggering the next process execution improves the efficiency of information flow transmission. It solves the problem that the number of stoves and pouring times are not timely, rigorous, traceability and coherence are not enough in the process of organizing production in steelmaking plants.