Abstract: The centralized control system of enterprise's energy sources based on Visual Basic 6.0 and iFIX configuration software was introduced, the development of key techniques was discussed, including: data exchange interface between monitoring system and database, user authorization managing module, WEB server configuration of energy sources monitoring system, and wastewater flow report communication module.This system carries out centralized control of various public utilities in an enterprise and forms an uniform monitoring platform.The system also issues monitoring data to be used by all departments via the computer network in the enterprise, and at the same time provides a standard data platform for enterprise MES/MIS.