According to our country’s policy of Energy Saver and Exhaust Reducer and oliymipic Security ,this article studied about environmental protection facilities in thermal power plant and real-time1 monitoring system of flue gas pollutant emissions. Collecting the environmental protection facilities of electric enterprises and Producing data of coal-fired power , these data have been transmited by private data network in electric power dispatching ,and been used real-time monitoring all of the data of flue gas pollutant emissions 0f coal-fired power for in Southern Hebei Power Network, and real-time monitoring the motion condition of environmental protection facilities .these data give some support to environmental protection organization to surveillance to flue gas control facilities’s function ,and give some support to coal-fired power’s electric quantity of desulfuration and the adjustion accounts of electricity price of desulfuration . This study about Real-time monitoring system decrease the monitoring system of flue gas pollutant and reduce the environment pollution of electric enterprises.