Based on the analysis of raw mix slurry in production of alumina with sintering and long-period knowledge of expert experience, a knowledge base edit and maintenance system is designed. According to practical production process, the knowledge of mechanism and group expert knowledge is unified to one. With the knowledge expression form of production, the feature of the knowledge is in- troduced, and the dictionaries of parameters, statuses and relations are built. At last, the realization and the function of the knowledge base edit and maintenance system are presented. The results of actual ope...