This article describes the characteristics of CIMS is process industry, and introduces the key factors for the implementation of CIMS, the application of real-time data base and CIMS in ethylene production developed by the Computer Technology& Development Company of Daqing Petrochemical Complex. 简述了流程工业CIMS的特点,介绍了大庆石油化工总厂计算机开发公司开发的CIMS实施核心要素、实时数据库及CIMS在乙烯生产中的应用情况。